Petition for Writ of Certiorari — Chatom Primary Care, P.C., et al., Petitioners v. Merck & Co., Inc.

Supreme Court briefJul 10, 2025

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APPENDIX

TABLE OF CONTENTS

Appendix A Opinion of the United States Court

of Appeals for the Third Circuit

(Oct. 7, 2024)....................................... App. 1a

Appendix B Memorandum of the United States

District Court for the Eastern

District of Pennsylvania

(July 27, 2023) .................................. App. 39a

Appendix C Order of the United States Court

of Appeals for the Third Circuit

Denying Rehearing

(Feb. 10, 2025) .................................. App. 90a

-1aAppendix A

UNITED STATES COURT OF APPEALS

FOR THE THIRD CIRCUIT

No. 23-3089

IN RE: MERCK MUMPS VACCINE ANTITRUST

LITIGATION

MERCK & CO., INC.,

APPELLANT.

On Appeal from the United States District Court

for the Eastern District of Pennsylvania

(D.C. Civil Action No. 2-12-cv-03555)

District Judge: Honorable Chad F. Kenney

Argued July 9, 2024

Before: SHWARTZ, PHIPPS, and MONTGOMERYREEVES, Circuit Judges.

(Opinion filed: October 7, 2024)

Jessica L. Ellsworth [ARGUED]

Kristina Alekseyeva

Neal K. Katyal

Danielle D. Stempel

Michael J. West

-2aHogan Lovells US

555 Thirteenth Street NW

Columbia Square

Washington, DC 20004

Lisa C. Dykstra

R. Brendan Fee

Zachary M. Johns

Morgan Lewis & Bockius

2222 Market Street, 12th Floor

Philadelphia, PA 19103

Sally W. Bryan

Kathleen Hardway

Dino S. Sangiano

Venable LLP

750 E. Pratt Street, Suite 900

Baltimore, MD, 21202

Counsel for Appellant Merck & Co, Inc.

Jonathan Edelman

Kellie Lerner

Laura Song

Robins Kaplan

1325 Avenue of the Americas, Suite 2601

New York, NY 10019

Deepak Gupta [ARGUED]

Gupta Wessler

2001 K Street NW, Suite 850 North

Washington, DC 20006

-3aJeffrey L. Kodroff

John A. Macoretta

Dianna J. Zinser

Spector Roseman & Kodroff

2001 Market Street, Suite 3420

Philadelphia, PA 19103

Counsel for Appellees Chatom Primary Care PC,

on behalf of itself and all others similarly

situated; Dr. Andrew Klein; & John Ivan Sutter,

M.D.

OPINION*

MONTGOMERY-REEVES, Circuit Judge:

Antitrust law does not bar regulated parties from

petitioning the government. And a petition is not a sham

merely because it seeks and obtains a selfish result.

In the late 1990s, the Food & Drug Administration

(the “FDA”) approached Merck & Co., Inc. (“Merck”)

with concerns about the end-of-shelf-life potency of its

mumps vaccine, the sole licensed mumps vaccine available

in the United States. At the FDA’s suggestion, Merck

boosted the initial potency of its vaccine, presumably with

the hope that increasing beginning-of-shelf-life potency

would increase end-of-shelf-life potency too. This fix did

not work. But Merck did not reveal that failing to the FDA

because Merck was concerned that diminishing the

relevant drug-label claims could hasten the arrival of

*

This disposition is not an opinion of the full Court and pursuant

to I.O.P. 5.7 does not constitute binding precedent.

-4acompetition by lowering the regulatory bar that a

competitor would need to clear to show that its mumps

vaccine was not inferior to Merck’s, an apparent

prerequisite for FDA approval. So rather than reveal that

its vaccine might be misbranded, Merck allegedly (1)

concealed its ongoing potency problems, (2) ran a flawed

clinical trial, and (3) relied on that unreliable data to

persuade the FDA to license a less potent vaccine.

Appellees are a collection of physicians and physicians’

groups who filed a class-action lawsuit alleging that they

bought Merck’s mumps vaccines at inflated prices.

Among other things, their complaint alleges that Merck

unlawfully extended its apparent monopoly by making

false drug-label claims with the goal of thwarting

competition, in violation of § 2 of the Sherman Act, 15

U.S.C. § 2. After lengthy discovery, Merck moved for

summary judgment on a few grounds, including that the

Noerr-Pennington doctrine purportedly shielded Merck

from liability under the Sherman Act because the

asserted harm to competition flowed from Merck‘s

genuine and successful petitioning of the FDA. The

District Court rejected Merck‘s motion for summary

judgment on the antitrust claim and granted Merck‘s

request to file an interlocutory appeal under 28 U.S.C. §

1292(b). This appeal followed.

The record contains troubling evidence that Merck

sought to extend its apparent monopoly by

misrepresenting facts about its mumps vaccines on the

FDA-approved drug labeling. But those allegedly false

claims were the result of Merck‘s genuine and successful

petitioning of the FDA. And Noerr-Pennington immunity

is not vitiated “simply because [the relevant petitioning]

... ha[d] a commercial impact and involve[d] conduct that

-5acan be termed unethical.” E. R.R. Presidents Conf. v.

Noerr Motor Freight, 365 U.S. 127, 141 (1961). Thus,

there is no genuine dispute of material fact that NoerrPennington immunity attaches to Merck‘s alleged

anticompetitive scheme. And we will reverse-in-part the

District Court‘s order denying summary judgment.

I. BACKGROUND1

Because Merck moved for summary judgment, the

following recitation of the facts resolves all disputes and

draws all reasonable inferences in Appellees’ favor.

Physicians Healthsource, Inc. v. Cephalon, Inc., 954 F.3d

615, 618 (3d Cir. 2020).

A. Facts

From 1967 until 2022, Merck was the sole licensed

manufacturer of mumps vaccines in the United States.

Merck accompanied doses of its vaccine2 with FDAapproved labeling that provided information about the

drug, including its “shelf life, minimum potency

requirements, basis for licensure, and effectiveness[.]”

See App. 10,029. Merck had an ongoing duty to ensure

that its drug label was accurate. Wyeth v. Levine, 555 U.S.

555, 570–71 (2009) (“[I]t [is] ... a central premise of federal

drug regulation that the manufacturer bears

responsibility for the content of its label at all times.”).

1

We write for the benefit of the parties and recite only essential

facts. For a more detailed discussion of the factual background, see

this Court’s related decision in United States ex rel. Krahling v.

Merck & Co., No. 23-2553, 2024 WL 3664648, at *1–5 (3d Cir. Aug. 6,

2024).

2

Merck sold two branded mumps vaccines during the years

relevant to this appeal, MMR-II and ProQuad. For simplicity—and

because the vaccines used the same mumps component—we refer to

a singular “vaccine” when discussing Merck’s mumps vaccines.

-6aIn the late 1990s, the FDA raised concerns that

Merck’s mumps vaccine might be sub-potent toward the

end of its 24-month shelf life, meaning that doses might

not contain the minimum amount of live virus stated on

the drug label. Merck agreed—at the FDA’s suggestion—

to boost the initial potency of its vaccine, presumably with

the hope that overfilled doses would have enough buffer

to remain potent through the end of their shelf life.

Overfilling doses did not fix the end-of-shelf-life

potency problem with Merck’s mumps vaccine. But Merck

did not share that information with the FDA because

Merck was concerned that the FDA might—at a

minimum—order Merck to reduce the drug-label claims

about the shelf life and seroconversion of its mumps

vaccine.3 Weakening label claims was not a palatable

option to Merck because a rival pharmaceutical

manufacturer, GlaxoSmithKline (“GSK”), sold a

comparable mumps vaccine in Europe and wanted to

bring that vaccine to the United States. Merck feared that

GSK’s domestic launch was “imminent.” App. 4840. And

Merck was wary of hastening GSK’s arrival by lowering

the bar to entry, as GSK needed to show that its mumps

vaccine was not inferior to Merck’s mumps vaccine to gain

FDA approval. So rather than open the door to

competition by disclosing that its mumps vaccine might be

misbranded, Merck sought to extend its apparent

monopoly by (1) misrepresenting or concealing

information about the end-of-shelf-life potency of its

3

Seroconversion “refers to a person going from being

‘seronegative’ prior to vaccination, which generally means lacking

pathogen specific antibodies, to being ‘seropositive’ after vaccination,

which means possessing such antibodies.” In re Merck Mumps

Vaccine Antitrust Litig., 685 F. Supp. 3d 280, 293 (E.D. Pa. 2023).

-7avaccine and (2) filing a Supplemental Biologics License

Application (“sBLA”) seeking the FDA’s approval to

maintain the existing drug-label claims about shelf life

and seroconversion with a less potent vaccine.

To support its sBLA, Merck ran a new trial—called

Protocol 007—to demonstrate that Merck could reduce

the potency of its vaccine without impairing the existing

drug-label claims about seroconversion. According to

Appellees, Protocol 007 was a flawed study that did not

reliably capture immunogenicity.4 Nonetheless, Merck

leveraged the results of Protocol 007 to persuade the FDA

to approve Merck’s sBLA. As a result of the FDA’s

approval, Merck continued to make unsupported or

misleading claims about the shelf life and seroconversion

of its mumps vaccine on the drug label.

GSK could not replicate Merck’s drug-label claims

about seroconversion. And that led GSK to conclude that

the FDA would view GSK’s mumps vaccine as inferior to

Merck’s. Eventually, GSK accessed the methodology

underlying Protocol 007 and relied on the same or similar

assays5 as Merck to establish non-inferiority. The FDA—

which knew about Merck’s end-of-shelf-life potency

problems and the alleged flaws with Protocol 007, see

United States ex rel. Krahling v. Merck & Co., No. 232553, 2024 WL 3664648, at *8 (3d Cir. Aug. 6, 2024)—

accepted GSK’s clinical evidence and, in 2022, approved

4

Immunogenicity “provides information about how a subject’s

immune system responds to different stimuli, including vaccination.”

In re Merck Mumps Vaccine Antitrust Litig., 685 F. Supp. 3d at 293.

5

Assays refer to types of tests. See, e.g., Assay, Oxford English

Dictionary,

https://www.oed.com/dictionary/assay_n?tab=

meaning_and_use#37098486 (last visited Sept. 29, 2024) (“The trying

(of a person or things); trial imposed upon or endured by any object,

in order to test its virtue, fitness, etc.”).

-8aGSK’s application to sell a competing mumps vaccine in

the United States.

To date, the FDA has not asked Merck to change the

relevant drug-label claims, issued a recall, ordered

revaccinations, or taken any other action against Merck

for the purported issues with its mumps vaccine. The

Centers for Disease Control and Prevention (the “CDC”)

continues to buy mumps vaccines from Merck and GSK.

Id. at *5. And the CDC’s Advisory Committee on

Immunization Practices continues to recommend Merck’s

mumps vaccine and deems it “fully interchangeable” with

GSK’s vaccine. Id.

B. Procedural History

Appellees are a collection of physicians and physicians’

groups who claim that they bought Merck’s mumps

vaccine at an inflated price. Their operative complaint

alleges several claims against Merck, including

monopolization in violation of § 2 of the Sherman Act, 15

U.S.C. § 2. After lengthy discovery, Merck moved for

summary judgment on a few bases, including that (1)

Noerr-Pennington immunity purportedly attached to all

of Merck’s allegedly anticompetitive conduct, and (2)

Appellees purportedly failed to adduce evidence of

antitrust injury.

The District Court granted-in-part and denied-in-part

Merck’s motion for summary judgment,6 rejecting

Merck’s contentions that it was entitled to summary

judgment on Noerr-Pennington immunity and antitrust

injury. Merck sought and obtained the District Court’s

6

The District Court granted Merck’s motion for summary

judgment with respect to Appellees’ state-law claims. Appellees do

not challenge that decision on appeal, so we do not address it.

-9apermission to file an interlocutory appeal under 28 U.S.C.

§ 1292(b). This Court accepted the appeal.

II. DISCUSSION7

“[T]his case is and always has been about Merck’s

label for its [mumps vaccines] and its use of those labels

to keep GSK out of the market.” App. 264. So our analysis

begins—and ends—with the FDA-approved drug label.

A. Law

“Section 2 of the Sherman Act ‘makes it unlawful to

monopolize, attempt to monopolize, or conspire to

monopolize, interstate or international commerce.’ ”

Mylan Pharms. Inc. v. Warner Chilcott Pub. Ltd. Co., 838

F.3d 421, 433 (3d Cir. 2016) (quoting Broadcom Corp. v.

Qualcomm Inc., 501 F.3d 297, 306 (3d Cir. 2007)).

Appellees assert that Merck violated § 2 by

“implement[ing] a scheme to unlawfully protect its

monopoly” through “false and misleading claims on its

mumps-vaccine labels that GSK needed to match to enter

the U.S. market.” Response Br. 1. According to Appellees,

“Merck knew [that] neither its vaccine, nor GSK’s, could

meet those claims.” Id. But Merck did not reveal that

7

The District Court had jurisdiction under 28 U.S.C. §§ 1331 and

1367. We have jurisdiction under 28 U.S.C. § 1292(b).

We exercise plenary review over the District Court’s order

denying summary judgment. Huber v. Simon’s Agency, Inc., 84 F.4th

132, 144 (3d Cir. 2023) (“Our review of an order granting [or denying]

summary judgment is plenary, meaning we review anew the District

Court’s summary judgment decision, applying the same standard it

must apply.” (cleaned up) (quoting Ellis v. Westinghouse Elec. Co., 11

F.4th 221, 229 (3d Cir. 2021))). Summary judgment is appropriate only

if there is no genuine dispute of material fact and the movant is

entitled to judgment as a matter of law. Id. (citing Fed. R. Civ. P.

56(a)).

-10areality to the FDA or the pubxlic. As a result, “Merck’s

strategy succeeded: it delayed GSK’s entry into the U.S.

market by over a decade.” Id.

The record contains evidence that Merck sought to

extend its apparent monopoly by artificially raising the

bar that GSK had to clear to obtain FDA approval for its

competing mumps vaccine. That alleged anticompetitive

conduct might not have violated the Sherman Act,

however, because “[a] party who petitions the

government for redress generally is immune from

antitrust liability” even if their petitioning “causes an

anti-competitive effect.” Cheminor Drugs, Ltd. v. Ethyl

Corp., 168 F.3d 119, 122 (3d Cir. 1999) (collecting cases).

This petitioning immunity—named the NoerrPennington doctrine after a pair of seminal Supreme

Court decisions, see E. R.R. Presidents Conf. v. Noerr

Motor Freight, Inc., 365 U.S. 127 (1961); United Mine

Workers of Am. v. Pennington, 381 U.S. 657 (1965)—is

rooted in a few considerations, including constitutionalavoidance concerns related to the First Amendment’s

Petition Clause, Pro. Real Est. Invs., Inc. v. Columbia

Pictures Indus., Inc. (“P.R.E.”), 508 U.S. 49, 56 (1993),

and the notion that Congress did not intend to proscribe

harm to competition that “is the result of valid

government action, as opposed to private action,” Noerr,

365 U.S. at 136.8 The immunity extends to petitioning of

8

See also City of Columbia v. Omni Outdoor Advert., Inc., 499

U.S. 365, 383 (1991) (“As we have described, Parker and Noerr are

complementary expressions of the principle that the antitrust laws

regulate business, not politics; the former decision protects the States’

acts of governing, and the latter the citizens’ participation in

government.”); Edinboro Coll. Park Apartments v. Edinboro Univ.

Found., 850 F.3d 567, 572 (3d Cir. 2017) (“In Parker v. Brown, 317

-11aall three branches of government, including

administrative agencies like the FDA. Cheminor, 168

F.3d at 122 (“This immunity extends to persons who

petition all types of government entities—legislatures,

administrative agencies, and courts.” (citing Cal. Motor

Transp. Co. v. Trucking Unlimited, 404 U.S. 508, 510

(1972))).

While Noerr-Pennington immunity is broad, its scope

“is not absolute.” In re Wellbutrin XL Antitrust Litig.

Indirect Purchasers Class, 868 F.3d 132, 148 (3d Cir.

2017). And controlling precedent recognizes one

exception implicated here: petitions that are “not

genuinely aimed at procuring favorable government

action” are deemed a sham and receive no immunity.

P.R.E., 508 U.S. at 58 (quoting Allied Tube & Conduit

Corp. v. Indian Head, Inc., 486 U.S. 492, 500 n.4 (1988)).

“[E]vidence of anticompetitive intent or purpose alone

cannot transform otherwise legitimate activity into a

sham.” Id. at 59 (collecting cases). Rather, the sham

exception hinges on whether the petitioner sought to use

the invocation of governmental process—as opposed to

the result of that process—to harm competition. If the

former, the petition is a sham, and no immunity attaches.

If the latter, the petition is not a sham, and the sham

exception does not apply.

For a petition to be a sham, two things must be true.

First, the petition “must be objectively baseless in the

sense that no reasonable [petitioner] could realistically

expect success on the merits.” P.R.E., 508 U.S. at 60.

Second, the petitioner must subjectively intend to “use ...

governmental process—as opposed to the outcome of that

U.S. 341 (1943), the Supreme Court held that the Sherman Act does

not prohibit anticompetitive state action.”).

-12aprocess—as an anticompetitive weapon” “to interfere

directly with the business relationships of a competitor.”

Armstrong Surgical Ctr., Inc. v. Armstrong Cnty. Mem’l

Hosp., 185 F.3d 154, 158 n.2 (3d Cir. 1999) (cleaned up)

(quoting P.R.E., 508 U.S. at 60–61). Courts consider the

petitioner’s “subjective motivation” “[o]nly if [the]

challenged [petition] is objectively meritless.” P.R.E., 508

U.S. at 60. Thus, evidence of a petitioner’s subjective

intent cannot create a genuine dispute of material fact

about whether Noerr-Pennington immunity applies if a

petition has objective merit. See id.

When a petition contains misrepresentations, this

Court “determine[s] whether [the] petition [is] objectively

baseless under the [first step of the] Supreme Court’s test

in PRE, without regard to those [false] facts[.]”

Cheminor, 168 F.3d at 123 (emphasis omitted). Even if a

petition would be objectively meritless with the truth, the

petition is not a sham unless the plaintiff “pass[es] the

second[ ] ‘subjective test’” by showing that the petitioner’s

subjective “purpose was [not] to secure the outcome of the

[governmental] process” that they invoked. Armstrong,

185 F.3d at 158 n.2. See also Omni, 499 U.S. at 380 (“A

‘sham’ situation involves a defendant whose activities are

‘not genuinely aimed at procuring favorable government

action’ at all, not one ‘who genuinely seeks to achieve his

governmental result, but does so through improper

means.’” (quoting Allied Tube, 486 U.S. at 500 n.4, 508

n.10)).

B. Party Arguments

Merck argues that its purported anticompetitive

scheme boils down to successfully petitioning the FDA to

maintain the existing claims about seroconversion, shelf

life, and potency that Merck included on the drug label for

-13aits mumps vaccine. Noerr-Pennington immunity shields

legitimate petitions that seek to harness government

action for selfish purposes. See, e.g., P.R.E., 508 U.S. at 58

(“In short, ‘Noerr[-Pennington immunity] shields from

the Sherman Act a concerted effort to influence public

officials regardless of intent or purpose.’ ” (quoting

Pennington, 381 U.S. at 670)). Merck claims that its

alleged anticompetitive scheme fits that bill, so it is

immune from liability under the Sherman Act.

Appellees respond that there is a genuine dispute of

material fact about whether Noerr-Pennington immunity

bars their antitrust claim for three main reasons. First,

Appellees argue that “Merck’s responses to [the] FDA

[were] not petitioning actions but rather required

answers in a regulatory proceeding” and thus were a

“mere incident of regulation” not cloaked by immunity.

Response Br. 58–59 (quoting Litton Sys., Inc. v. Am. Tel.

& Tel. Co., 700 F.2d 785, 807 (2d Cir. 1983)). Second,

Appellees argue that Merck’s petitions were a sham

because “Merck knowingly misrepresented the

specifications

of

its

vaccines,”

and

those

“misrepresentations caused [the] FDA to have ‘no

negative feedback.’ ” Id. at 61–62 (quoting App. 5575,

9784). Third, Appellees appear to argue that even if

Noerr-Pennington

immunity

shields

Merck’s

communications with the FDA, summary judgment is

improper because “Merck’s misleading public label

claims” were themselves—or were the result of—private

conduct, not government action. Id. at 54, 54–58. And

Appellees claim that they can rely on “facts indisputably

outside of Noerr protection” to prove that Merck violated

the Sherman Act, like “public statements,” “internal

documents” from Merck and GSK, “and unrebutted

expert testimony.” Id. at 31.

-14aThe following analysis begins by addressing whether

Merck petitioned the FDA and then turns to the sham

exception and Merck’s non-petitioning conduct.

C. Analysis

There is no genuine dispute of material fact that

Noerr-Pennington immunity shields Merck from liability

for its alleged anticompetitive conduct. For starters, we

have no trouble concluding that Merck’s communications

with the FDA involved petitioning. Required or not, those

communications sought to persuade the FDA to approve

or refrain from changing the claims about seroconversion,

shelf life, and potency that Merck included on the drug

label for its mumps vaccine. Asking the FDA to raise the

bar for competition by confirming that Merck—and, by

extension, GSK—must meet inflated claims about

immunogenicity to sell a mumps vaccine in the United

States fell within the heartland of petitioning activity. See,

e.g., Noerr, 365 U.S. at 136 (describing petitioning as “an

attempt to persuade the legislature or the executive to

take particular action with respect to a law that would

produce a restraint or a monopoly.”). And nothing was

incidental or passive about the FDA’s continued approval

of Merck’s drug-label claims in response to petitioning

designed to elicit that exercise of governmental

discretion.9

9

See also Wyeth, 555 U.S. at 568 (“Generally speaking, a

manufacturer may only change a drug label after the FDA approves

a supplemental application.”); cf. Cont’l Ore Co. v. Union Carbide &

Carbon Corp., 370 U.S. 690, 707 (1962) (no petitioning involved

because the defendants “were engaged in private commercial activity,

no element of which involved seeking to procure the passage or

enforcement of laws”); Litton, 700 F.2d at 806–07 (“filing of ... tariffs”

with the Federal Communications Commission was “a mere incident

of regulation” not entitled to immunity because “[t]he decision to

-15aLikewise, it is apparent that Merck’s petitioning was

not a sham.10 “A winning [petition] is by definition a

reasonable effort at petitioning for redress and therefore

not a sham.” P.R.E., 508 U.S. at 60 n.5. There is no dispute

that Merck succeeded in persuading the FDA to approve

the relevant claims about seroconversion, shelf life, and

potency that Merck included on the drug label for its

mumps vaccine. So it appears at first blush that Merck’s

petitioning necessarily had objective merit because it

persuaded the FDA.

Appellees push back on this analysis by pointing to

evidence

that

Merck

allegedly

withheld

or

misrepresented information when corresponding with the

FDA. Even if we assume that Merck’s petitions would

lack objective merit without those alleged falsehoods,11

Appellees concede that they “do not allege injury from the

process at all, never mind an abuse of that process,”

Response Br. 63. Thus, Appellees’ theory of the case

impose and maintain the ... tariff was made in [the defendantcompany’s] boardroom, not at the [Commission]”); In re ZF-TRW

Airbag Control Units Prods. Liab. Litig., 601 F. Supp. 3d 625, 751

(C.D. Cal. 2022) (mandatory responses to government agency did not

involve petitioning because the responses did not “urge [the agency]

to exercise its administrative discretion by taking or refraining from

an action” (cleaned up)).

10

Because it is apparent that Merck’s petitioning was not a

sham, we need not—and do not—decide whether the sham exception

is limited to the adjudicative sphere, or whether Merck’s

communications with the FDA should be characterized as

adjudicative or legislative.

11

At least with respect to immunogenicity, that is a dubious

premise considering that the FDA has not ordered Merck to change

the relevant drug-label claims or taken any action against Merck after

learning of the alleged end-of-shelf-life potency problems and

Protocol 007. See Krahling, 2024 WL 3664648, at *7–8.

-16aseems to be that Merck intended to use the result of

petitioning the FDA to thwart competition by “ma[king]

misrepresentations that caused [the] FDA to give ‘no

negative feedback’” about Merck’s end-of-shelf-life

potency problems and the sBLA. Id. (quoting App. 5575,

9784). By definition, Merck cannot have intended to

commit a sham if it sought to use the result of petitioning

the government (i.e., FDA-approved drug label claims)—

as opposed to the petitioning itself—to harm competition.

See P.R.E., 508 U.S. at 60–61. And Appellees do not

explain how there can be a genuine dispute of material

fact about whether Merck subjectively intended to

commit a sham if there is no evidence that Merck’s

invocation of process itself harmed competition. Thus,

Appellees have failed as a matter of law to satisfy the

subjective prong of the P.R.E. test because there is no

genuine dispute of material fact that Merck did not intend

to commit a sham. And there is no need to send this case

to trial on objective merit if a reasonable jury could not

find that the subjective prong of the P.R.E. test is met. Cf.

Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248 (1986)

(“[S]ummary judgment will not lie if the dispute about a

material fact is ‘genuine,’ that is, if the evidence is such

that a reasonable jury could return a verdict for the

nonmoving party.”).12

12

Several of our sister circuits appear to recognize a standalone

exception to Noerr-Pennington immunity for petitions—made in an

adjudicative setting—containing fraudulent misrepresentations. See,

e.g., Amphastar Pharms. Inc. v. Momenta Pharms., Inc., 850 F.3d 52,

56 (1st Cir. 2017) (“Noerr-Pennington immunity ... has a wellestablished exception for knowing misrepresentations, at least in the

administrative and adjudicatory contexts.” (cleaned up)); Mercatus

Grp., LLC v. Lake Forest Hosp., 641 F.3d 834, 842 (7th Cir. 2011)

(“[T]here is little doubt that fraudulent misrepresentations may

-17arender purported petitioning activity a sham not protected from

antitrust liability.” (cleaned up)); Kottle v. Nw. Kidney Ctrs., 146 F.3d

1056, 1060 (9th Cir. 1998) (“[I]n the context of a judicial proceeding, if

the alleged anticompetitive behavior consists of making intentional

misrepresentations to the court, litigation can be deemed a sham if a

party’s knowing fraud upon, or its intentional misrepresentations to,

the court deprive the litigation of its legitimacy.” (cleaned up)). See

generally Phillip E. Areeda & Herbert Hovenkamp, Antitrust Law:

An Analysis of Antitrust Principles and Their Application, ¶ 203a–b,

d–f (last updated May 2024).

Appellees expressly disclaim reliance on a separate exception for

fraudulent misrepresentation. Response Br. 65 (arguing that the

Seventh Circuit’s opinion in Mercatus is distinguishable because it

“addressed a separate exception for fraudulent misrepresentation—

an exception the Third Circuit rejects” (first citing 641 F.3d at 845–

46; and then citing Cheminor, 168 F.3d at 124)). Thus, Appellees have

waived any argument based on that purported exception. Barna v.

Bd. of Sch. Dirs. of the Panther Valley Sch. Dist., 877 F.3d 136, 147

(3d Cir. 2017) (“Waiver ... is the intentional relinquishment or

abandonment of a known right.” (cleaned up)); Holk v. Snapple

Beverage Corp., 575 F.3d 329, 336 (3d Cir. 2009) (“[E]xplicitly

disclaim[ing]” an argument “clearly demonstrates ... that the issue is

waived”). And we may not address it on appeal. TD Bank N.A. v. Hill,

928 F.3d 259, 276 n.9 (3d Cir. 2019) (“[W]e may affirm on any ground

supported by the record as long as the appellee did not waive—as

opposed to forfeit—the issue.” (collecting cases)).

Moreover, even if we were to construe Appellees’ brief as

forfeiting—as opposed to waiving—an argument based on the

fraudulent-misrepresentation exception, but see Barna, 877 F.3d at

147 (“Forfeiture is the failure to make the timely assertion of a right,

an example of which is an inadvertent failure to raise an argument.”

(cleaned up) (quoting United States v. Olano, 507 U.S. 725, 733

(1993))), Cheminor expressly declined to adopt a standalone exception

for fraudulent misrepresentations in the adjudicative sphere. 168 F.3d

at 123 (The plaintiff “argues either that Noerr-Pennington immunity

does not apply at all to petitions containing misrepresentations or that

[the petitioner’s] alleged misrepresentations led to the conclusion”

that the relevant petition “was objectively baseless. We decline to

carve out a new exception to the broad immunity that NoerrPennington provides. Rather, we will determine whether [the]

-18apetition was objectively baseless under the Supreme Court’s test in

PRE, without regard to those facts that [the plaintiff] alleges [the

petitioner] misrepresented.” (emphasis removed)). See also id. at 131–

32 (Sloviter, J., dissenting) (“The majority’s decision to disregard the

facts that [the plaintiff] alleges [the petitioner] misrepresented is

contrary to the position of the two other courts of appeals that have

considered this issue. Both of these courts read PRE to preserve a

fraud exception to antitrust immunity, although they vary in their

interpretation of that exception.” (citations omitted); “Unlike the

majority, I conclude that the District Court erred in recognizing only

a single exception to Noerr-Pennington immunity based on ‘objective

baselessness[.]’ ”).

A few months later, this Court’s decision in Armstrong clarified

that a plaintiff still must show that the petitioner sought to use

government process itself—as opposed to the result of that process—

as an anticompetitive weapon to invoke the sham exception to NoerrPennington immunity, confining the narrow exception that Cheminor

recognized to the first prong of the P.R.E. test, objective merit. See

185 F.3d at 158 n.2. In so doing, Armstrong explained that “[w]hile

Cheminor focuse[d] on the sham exception to Noerr immunity, it also

reject[ed the plaintiff’s] more general argument that ‘NoerrPennington immunity does not apply at all to petitions containing

misrepresentations.’ ” Id. (quoting Cheminor, 168 F.3d at 123).

Armstrong then seems to have—like Cheminor—rejected a general

fraud exception to Noerr-Pennington immunity, explaining that

“[l]iability for injuries caused by ... state action is precluded even

where it is alleged that a private party urging the action did so by

bribery, deceit or other wrongful conduct that may have affected the

decision making process.” Id. at 162. See also id. at 164 (Schwartz,

D.J., dissenting) (“With its decision today, the majority holds private

parties who make misrepresentations that pervasively influence the

decision making process of public entities are entitled to immunity

under both the state action immunity doctrine and the Noerr–

Pennington immunity doctrine.”).

While reasonable minds can and do differ, see Dissenting Op. at

4–6, we read Cheminor and Armstrong to reject a standalone

exception to Noerr-Pennington immunity for petitions containing

fraudulent misrepresentations in this context. And we are bound by

those decisions even if we disagree with the result that they produce

in this appeal. United States v. Harris, 68 F.4th 140, 146 (3d Cir. 2023)

-19aFinally, Appellees’ attempt to rely on evidence of

Merck’s non-petitioning conduct to establish an antitrust

violation has a minor flaw and a major flaw. The minor

flaw is that Appellees sometimes appear to treat NoerrPennington immunity like an evidentiary privilege that

bars the use of genuine petitions to prove an antitrust

violation. But Noerr-Pennington immunity is not a rule of

evidence that prevents plaintiffs from using the contents

of a genuine petition to prove an antitrust violation.

Rather, Noerr-Pennington immunity is a substantive

principle of antitrust law—derived from the statutory text

and purpose of the Sherman Act—that shields defendants

from liability based on the notion that “[t]he federal

antitrust laws ... do not regulate the conduct of private

individuals in seeking anticompetitive action from the

government.” Omni, 499 U.S. at 379–80.13 So the question

is not whether Appellees adduced non-petition evidence

showing that Merck schemed to unlawfully extend its

apparent monopoly. Rather, the question is whether the

evidence that Appellees adduced supports a reasonable

(“[I]t is a well-established ‘tradition of this court’ that an opinion with

precedential authority ‘is binding on subsequent panels.’” (quoting 3d

Cir. I.O.P. 9.1)).

13

See also Pennington, 381 U.S. at 670 n.3 (“It would of course

still be within the province of the trial judge to admit ... evidence” of

an alleged conspiracy between private parties and a government actor

“under the established judicial rule of evidence that testimony of prior

or subsequent transactions, which for some reason are barred from

forming the basis for a suit, may nevertheless be introduced if it tends

reasonably to show the purpose and character of the particular

transactions under scrutiny.” (cleaned up) (collecting cases)); Nat.Immunogenics Corp. v. Newport Trial Grp., No. SACV 15-02034

JVS(JCGx), 2018 WL 6137597, at *3 (C.D. Cal. May 16, 2018) (“NoerrPennington insulates parties from liability for their petitioning

conduct, it is not an independent evidentiary privilege.”).

-20ainference that it was Merck’s private conduct—not the

FDA’s exercise of regulatory discretion, which Merck’s

petitioning sought to induce—that delayed the launch of

GSK’s competing vaccine.

The major flaw is that the evidence Appellees adduced

cannot link Merck’s private conduct to GSK’s delay

without passing through the drug-label claims about

seroconversion, shelf life, and potency that Merck

persuaded the FDA to approve. That regulatory approval

was an act of governmental discretion, not Merck’s

private conduct in the marketplace, and thus is shielded

by Noerr-Pennington immunity.

The crux of Appellees’ theory of antitrust injury is that

Merck “delayed the launch of [GSK’s] competing vaccine

by over a decade” by making or preserving “deceptive

statements on its mumps-vaccine labels.” Response Br.

29. Those deceptive statements caused delay, Appellees

assert, because GSK’s plan for its mumps vaccine aimed

to match the publicly available information within Merck’s

label. That was necessary, in Appellee’s view, because

GSK needed to configure its vaccine to reach the relative

effectiveness of Merck’s vaccine. Thus, “Merck’s false,

inflated labeling claims [allegedly] delayed GSK’s entry

by over a decade” by improperly exaggerating the claims

about “potency, shelf-life, and seroconversion” that GSK

had to meet to show that its vaccine “was ‘non-inferior’ to

Merck’s vaccine,” a prerequisite “[t]o gain U.S. approval.”

Id. at 5–6 (cleaned up).

The trouble for Appellees is that the heart of their

case—allegedly false or misleading claims about

seroconversion, shelf life, and potency that Merck

included on the FDA-approved label for its mumps

vaccine—was both the object and the result of Merck’s

-21asuccessful petitioning of the FDA. When the FDA

approached Merck with concerns about the end-of-shelflife potency of its mumps vaccine, Merck had two main

options: (1) reveal that its mumps vaccine might be

misbranded and then consider remedial actions, like

reducing the 24-month shelf life that Merck listed on the

drug label; or (2) persuade the FDA that overfilling doses

fixed that problem with end-of-shelf-life potency even

though Merck knew that was not true and then file an

sBLA requesting the FDA’s permission to maintain the

existing drug-label claims about seroconversion with a

less potent, and hence longer-lasting, mumps vaccine.

Merck chose the second option. That gambit worked. And

the FDA did not order Merck to change its drug label or

take any action against Merck after learning the truth

about the purported problems with its vaccine. So even if

Merck publicly admitted to misrepresenting claims on its

mumps vaccine, Appellees cannot show how their harm

flowed from Merck’s private conduct when the FDA—

government process—approved the label. That is because

GSK’s vaccine still would have lacked approval and

licensure on account of the FDA who—with knowledge of

the purported problems—allowed Merck to retain its

existing drug-label claims. Thus, there is no genuine

dispute of material fact that GSK’s delay was caused by

the FDA’s exercise of regulatory discretion in response to

Merck’s successful petitioning. And Noerr-Pennington

immunity bars Appellees’ § 2 claim against Merck as a

matter of law because the antitrust injury that Appellees

assert is the result of government action, not private

conduct. See, e.g., Omni, 499 U.S. at 379–80.14

14

Of course, had Appellees raised a genuine dispute of material

fact about whether an exception to Noerr-Pennington immunity

-22aAppellees’ brief contains some scattered arguments to

the contrary. None changes our analysis. For example,

Appellees seem to argue that Merck engaged in private

conduct every time that it printed or distributed its

allegedly deceptive drug label because it was Merck—not

the FDA—that arranged those publications. “Prospective

drug manufacturers work with the FDA to develop an

appropriate label when they apply for FDA approval of a

new drug.” Merck Sharp & Dohme Corp. v. Albrecht, 587

U.S. 299, 304 (2019) (citations omitted). The end result of

that work is a drug label that the manufacturer provides

or makes available to physicians, pharmacies, patients,

and other interested parties. See id. at 303–04 (“Although

we commonly understand a drug’s ‘label’ to refer to the

sticker affixed to a prescription bottle, in [some]

context[s] the term refers more broadly to the written

material that is sent to the physician who prescribes the

drug and the written material that comes with the

prescription bottle when the drug is handed to the patient

at the pharmacy.” (citing 21 U.S.C. § 321(m))). Thus,

Appellees appear to suggest an overbroad rule that would

vitiate Noerr-Pennington immunity whenever a

pharmaceutical manufacturer successfully petitions the

FDA to sell a new drug, as a plaintiff could evade

immunity by focusing on the contents of the FDAapproved label instead of the FDA’s discretionary

decision to approve the drug. We are reluctant to remove

Noerr-Pennington immunity root-and-stem from the

drug-approval process. And Appellees offer no controlling

authority to support that sweeping proposition.

applies, like the sham exception, Merck could be liable under the

Sherman Act even if the alleged antitrust injury flowed from Merck’s

petitioning of the FDA.

-23aMoreover, Appellees fail to explain how it was Merck’s

decision to publish the label—instead of the FDA’s

decision to approve the underlying drug-label claims—

that delayed GSK’s entry. As discussed above, Appellees’

core theory of antitrust injury is that Merck sought to

thwart competition by raising the bar that GSK had to

clear to obtain FDA approval. Merck’s allegedly false or

misleading label claims may have helped cause that

impediment. But that is because the FDA approved those

statements and thus could be expected to hold other

pharmaceutical manufacturers to the same standard

when examining non-inferiority.15 Accordingly, based on

the evidence and arguments presented here, there is no

genuine dispute of material fact that it was the FDA’s

approval of the relevant claims that Merck included on its

drug label that allegedly delayed GSK’s entry to the U.S.

market. And Appellees’ attempt to cast the content of

Merck’s FDA-approved drug label as private conduct

fails.16

15

Things might be different, for example, if a pharmaceutical

manufacturer included information on a drug label that the FDA did

not approve. And a rival manufacturer inferred that its vaccine was

inferior based on the false impression that the FDA had approved

those unapproved claims. We are not presented with that sort of

fringe circumstance here, however, as Appellees base their claim on

information that the FDA allowed Merck to include on the drug label

for its mumps vaccine.

16

The handful of cases that Appellees cite do not support their

assertion that Merck’s drug-label claims involved private conduct

because none of those cases relied on government-approved

information

heightening

a

government-imposed

licensing

requirement to show antitrust injury. Cf. Ticor Title Ins. Co. v. FTC,

998 F.2d 1129, 1138 (3d Cir. 1993) (collective rate setting approved by

insurance regulators); Barton’s Disposal Serv., Inc. v. Tiger Corp.,

886 F.2d 1430, 1436–37 (5th Cir. 1989) (suggesting that “predatory

-24aNext, Appellees cite internal documents allegedly

showing that Merck intentionally sought to thwart

competition so that Merck could keep collecting monopoly

rents. These documents support a reasonable inference

that Merck acted with anticompetitive intent. But

anticompetitive intent does not defeat Noerr-Pennington

immunity. Noerr, 365 U.S. at 140 (The “legality” of a

petition “[is] not at all affected by any anticompetitive

purpose it may have had.”). And Appellees cannot explain

how Merck’s internal machinations delayed GSK’s arrival

without passing through the FDA-approved drug-label,

which was the object and result of Merck’s genuine

petitioning—and thus involved government action, not

private conduct—for the reasons offered above.

Last, Appellees imply that Merck’s decision not to

inform the FDA about problems with Merck’s mumps

vaccine—as opposed to actively misrepresenting facts

while corresponding with the FDA—did not constitute

petitioning and thus fell under the umbrella of private

conduct. Merck’s alleged decision to omit facts from the

petitions that it filed with the FDA about the relevant

drug-label claims was “incidental” to Merck’s “valid effort

to influence governmental action,” Allied Tube, 486 U.S.

at 499 (quoting Noerr, 365 U.S. at 143), as Merck naturally

had to decide what information to include—and what

information to omit—when petitioning the FDA. Indeed,

categorizing omissions as private conduct would seem to

carve out a vast exception to Noerr-Pennington

immunity, as plaintiffs could evade the doctrine

altogether—include its exceptions, like the sham-petition

pricing” may be private conduct); In re: Lipitor Antitrust Litig., 868

F.3d 231, 264 (3d Cir. 2017) (private settlement agreement submitted

to government); Litton, 700 F.2d at 807 (unilateral tariff).

-25aexception—by focusing on omissions from petitions

instead of the petitions themselves. See, e.g., Allied Tube,

486 U.S. at 507 (explaining that Noerr-Pennington

immunity does not apply to “commercial activities simply

because they have a political impact” (citing Noerr, 365

U.S. at 141)).

Given that concern, we are satisfied that the existing

limitations on immunity, like the sham-petition exception,

suffice to preserve antitrust liability consistent with the

spirit and purpose of the Noerr-Pennington doctrine.17

We therefore reject Appellees’ argument that Merck’s

decision to omit information when corresponding with the

FDA constituted private conduct in the marketplace,

categorically

unprotected

by

Noerr-Pennington

immunity.

*

*

*

*

*

In sum, we hold that (1) Merck engaged in petitioning

activity when it sought and obtained the FDA’s approval

to make the relevant drug-label claims; (2) Merck’s

petitioning conduct was not a sham because it genuinely

sought and obtained that governmental action; and (3)

Appellees’ alleged antitrust injury flows from the FDA’s

discretionary decision to approve Merck’s drug-label

claims, not Merck’s private conduct. Accordingly, Merck

is entitled to summary judgment on the antitrust claim

because Noerr-Pennington immunity shields Merck from

liability for its alleged scheme to unlawfully raise the

17

As mentioned above, see infra note 12, other circuit courts

appear to recognize a standalone exception to Noerr-Pennington

immunity for fraudulent misrepresentation. Appellees expressly

disclaim reliance on that exception, and we read controlling precedent

to have expressly declined to adopt that exception, so we do not

address it.

-26aregulatory bar for competition by preserving false or

misleading claims on the FDA-approved drug label for

Merck’s mumps vaccine.18

III. CONCLUSION

For the reasons discussed above, we will reverse-inpart the District Court’s order and remand this case with

instructions to enter summary judgment for Merck.

SHWARTZ, Circuit Judge, dissenting.

This case presents an important question: should a

party who makes misrepresentations and material

omissions when petitioning the government be granted

antitrust immunity? I think not. As a result, I depart from

my colleagues and would affirm the District Court’s order

denying Merck summary judgment because a jury should

resolve factual disputes over whether Merck made

misrepresentations that preclude it from obtaining

Noerr-Pennington immunity for its petitioning activity. I

would also affirm because, even without considering

Merck’s petitioning activity, a reasonable jury could still

conclude that Merck engaged in anticompetitive conduct

by maintaining misrepresentations on its vaccine’s label

to protect its monopoly in the mumps vaccine market.1

18

Because we hold that Merck is shielded by Noerr-Pennington

immunity, we need not address whether there is a genuine dispute of

material fact about antitrust injury. See Ethypharm S.A. Fr. v. Abbott

Lab’ys, 707 F.3d 223, 232 n.17 (3d Cir. 2013) (antitrust standing does

not implicate Article III jurisdiction).

1

No party asserts that the vaccine is unsafe or ineffective.

-27aI

A

Under the Noerr-Pennington doctrine, “[a] party who

petitions the government for redress generally is immune

from antitrust liability.” Cheminor Drugs, Ltd. v. Ethyl

Corp., 168 F.3d 119, 122 (3d Cir. 1999). The doctrine is

rooted in the First Amendment’s right to free speech and

to petition the government for redress. See New W., L.P.

v. City of Joliet, 491 F.3d 717, 722 (7th Cir. 2007) (holding

Noerr-Pennington is “understood as an application of the

[F]irst [A]mendment’s [S]peech and [P]etitioning

[C]lauses”); see also E. R. R. Presidents Conf. v. Noerr

Motor Freight, Inc., 365 U.S. 127, 138-39 (1961) (holding

that subjecting a company’s “political activity” but “not

business activity” to the antitrust laws would be an

“unjustified” congressional invasion into the Bill of

Rights). Because, however, the First Amendment’s

Petitioning Clause does not tolerate abusing government

process, the Supreme Court has created the “sham

exception” to Noerr-Pennington Pro. Real Est. Invs., Inc.

v. Columbia Pictures Indus., Inc., 508 U.S. 49, 60-61

(1993) (“PRE”). This exception strips immunity from a

litigant whose petitioning activity is both (1) “objectively

baseless” and (2) subjectively motivated by

anticompetitive aims to abuse the governmental process.

Id.

Related to the notion that immunity should not be

conferred to disingenuous actors, some circuits have

recognized another exception to Noerr-Pennington

immunity known as the misrepresentation or fraud

-28aexception.2 This exception is based on the idea that a party

does not have a First Amendment right to misrepresent

2

Eight federal circuit courts have recognized or otherwise

suggested that a misrepresentation exception to Noerr-Pennington

exists, with some treating it as distinct from the sham exception and

others applying it as an exception within the sham exception. The

Courts of Appeal for the First, Fifth, Ninth, and Eleventh Circuits

have expressly recognized a distinct misrepresentation exception. See

Amphastar Pharms., Inc. v. Momenta Pharms., Inc., 850 F.3d 52, 56

(1st Cir. 2017) (“Noerr-Pennington immunity ... has a wellestablished exception for knowing misrepresentations, at least in the

administrative and adjudicatory contexts.” (internal quotation marks,

citation, and alteration omitted)); Kottle v. Nw. Kidney Ctrs., 146 F.3d

1056, 1062-63 (9th Cir. 1998); St. Joseph’s Hosp., Inc. v. Hosp. Corp.

of Am., 795 F.2d 948, 955 (11th Cir. 1986) (“When a governmental

agency ... is acting judicially” then “[m]isrepresentations ... do not

enjoy Noerr immunity.”); Woods Expl. & Producing Co. v.

Aluminum Co. of Am., 438 F.2d 1286, 1298 (5th Cir. 1971) (holding

that the filing of false documents related to requests to transport gas

to a state agency was not immunized because the “conduct was not

action designed to influence policy” and “abuse of the administrative

process ... does not justify antitrust immunity”). On different

occasions, the Court of Appeals for the Seventh Circuit has seemingly

treated the misrepresentation exception as both distinct from the

sham exception and incorporated therein. See U.S. Futures Exch.,

L.L.C. v. Bd. of Trade of the City of Chicago, Inc., 953 F.3d 955, 960

(7th Cir. 2020) (“Fraudulent misrepresentations made in an

adjudicative proceeding before an administrative agency are not

protected from antitrust liability.”); Mercatus Grp., LLC v. Lake

Forest Hosp., 641 F.3d 834, 843 (7th Cir. 2011) (explaining when “a

misrepresentation renders an adjudicative proceeding a sham”). The

Court of Appeals for the Sixth Circuit has applied the

misrepresentation as part of the sham exception. See Potters Med.

Ctr. v. City Hosp. Ass’n, 800 F.2d 568, 580-81 (6th Cir. 1986)

(“[K]nowing and willful submission of false facts to a government

agency falls within the sham exception to the Noerr-Pennington

doctrine. Such knowingly false submissions or intentional

misrepresentations constitute an abuse of government process[.]”

(internal citations omitted)). The Court of Appeals for the Fourth

-29amaterial facts while petitioning for government action

during an adjudicative proceeding. As the Court of

Appeals for the Ninth Circuit observed, a petitioner’s

misrepresentations to a government agency “deprive[s]

the entire [adjudicative] proceeding of its legitimacy.”

Kottle v. Nw. Kidney Ctrs., 146 F.3d 1056, 1062-63 (9th

Cir. 1998). The circuit courts that recognize the

misrepresentation exception derive it from the Supreme

Court’s suggestion in an antitrust case that

“[m]isrepresentations ... are not immunized when used in

the adjudicatory process.” Cal. Motor Transp. Co. v.

Circuit has noted that the exception may exist, but it did not reach the

issue as the plaintiff there failed to establish any material fraud or

deceit. See Balt. Scrap Corp. v. David J. Joseph Co., 237 F.3d 394, 40102 (4th Cir. 2001) (noting that whether a misrepresentation exception

to Noerr-Pennington exists is an open question, but that if one does,

“it extends only to the type of fraud that deprives [an adjudicative

proceeding] of its legitimacy”). Likewise, the Court of Appeals for the

District of Columbia Circuit, in determining whether NoerrPennington applied to certain common law tort claims outside of the

antitrust context, has suggested that the doctrine would not extend

immunity to an entity’s misrepresentations. See Whelan v. Abell, 48

F.3d 1247, 1254-55 (D.C. Cir. 1995) (“However broad the First

Amendment right to petition may be, it cannot be stretched to cover

petitions based on known falsehoods .... [A] knowing assertion of false

claims is not protected by Noerr-Pennington[.]”).

-30aTrucking Unlimited, 404 U.S. 508, 513 (1972).3, 4 For the

exception to apply, the misrepresentation must have been

(1) “intentionally made, with knowledge of its falsity[,]”

and (2) “material, in the sense that it actually altered the

outcome of the proceeding.” Mercatus Grp., LLC v. Lake

Forest Hosp., 641 F.3d 834, 843 (7th Cir. 2011) (citing,

inter alia, Cheminor, 168 F.3d at 124).

B

Although our Court has not expressly recognized a

misrepresentation exception, our precedent does not

foreclose it. Our caselaw counsels against tolerating a

party’s material misrepresentations in petitioning activity

during an adjudicative proceeding. In Cheminor, for

example, we declined to decide whether a

misrepresentation exception exists outside of the sham

exception but observed, within the confines of the sham

exception, that “a material misrepresentation that affects

the very core of a litigant’s ... case will preclude Noerr3

See also Cal. Motor Transp. Co., 404 U.S. at 513 (“There are

many [ ] forms of illegal and reprehensible practice which may corrupt

the administrative or judicial processes and which may result in

antitrust violations. Misrepresentations, condoned in the political

arena, are not immunized when used in the adjudicatory process ....

Insofar as the administrative or judicial processes are involved,

actions of that kind cannot acquire immunity by seeking refuge under

the umbrella of ‘political expression.’ ”). More than two decades later,

the Supreme Court again noted the possibility of a misrepresentation

exception. See PRE, 508 U.S. at 61 n.6 (“We need not decide here

whether and, if so, to what extent Noerr permits the imposition of

antitrust liability for a litigant’s fraud or other misrepresentations.”).

4

See supra note 1. Although Woods Explorati on & Producing

Co. was decided before California Motor, its view that NoerrPennington protects “action designed to influence policy” but not

“abuse of the administrative process” echoes California Motor. 438

F.2d at 1298.

-31aPennington immunity[.]” 168 F.3d at 124 (emphasis

omitted).

Less than four months after Cheminor, we made a

statement in Armstrong Surgical Center, Inc. v.

Armstrong County Memorial Hospital, that, read out of

context, could be viewed as foreclosing a

misrepresentation exception. See 185 F.3d 154, 162-63 (3d

Cir. 1999). Specifically, we stated that

the Sherman Act [ ] forecloses liability predicated

on anticompetitive injuries that are inflicted by

states acting as regulators. Liability for injuries

caused by such state action is precluded even

where it is alleged that a private party urging the

action did so by bribery, deceit or other wrongful

conduct that may have affected the decision

making process.

Id. Putting aside whether that dispute arose in the

legislative or adjudicative context,5 this quoted language

appears at the conclusion of the Court’s discussion of a

Supreme Court case that seemingly rejected a

misrepresentation

exception

in

legislative-type

proceedings, namely a zoning board’s enactment of an

ordinance. Id. at 161-62 (discussing City of Columbia v.

Omni Outdoor Advert., Inc., 499 U.S. 365 (1991)). Thus,

the Armstrong Court’s use of the phrase “states acting as

regulators” within its discussion of a state body acting in

a legislative context shows that it was speaking of

proceedings where an agency is engaged in promulgating

regulations, rather than where an agency enforces

regulations against a particular entity in a judicial-like

5

Armstrong involved antitrust claims that arose after the state

health department denied a medical practice a certificate of need that

was required to operate in the state. 185 F.3d at 156-57.

-32aadjudicative setting. Id. at 162. This matters because the

misrepresentation exception applies only to adjudicative,

as opposed to legislative, proceedings. See U.S. Futures

Exch., L. L.C. v. Bd. of Trade of the City of Chicago, Inc.,

953 F.3d 955, 960 (7th Cir. 2020); see also Cal. Motor

Transp. Co., 404 U.S. at 513 (distinguishing between the

“political arena” and an “adjudicatory process”).

Therefore, the above quoted language in Armstrong

reflects only the uncontroversial rule that there is no

misrepresentation exception in legislative proceedings,

which accords with our sister circuits.6

Accordingly, I would recognize a misrepresentation

exception to Noerr-Pennington the context of

adjudicative proceedings.

C

Because the misrepresentation exception applies only

in the adjudicative context, I consider next whether

Merck’s petitioning activity occurred in an adjudicative or

legislative proceeding. To determine whether a

proceeding is adjudicative or legislative for NoerrPennington immunity purposes, courts consider:

(1) the general nature of the authority exercised by

the agency; (2) the formality of the agency’s factfinding process; (3) the extent to which fact

gathering is subject to political influence; (4)

6

Moreover, a close reading of Armstrong shows that this

statement was dicta because the ultimate holding was based on the

absence of evidence to suggest that the misrepresentations there

were material, Armstrong Surgical Ctr., Inc., 185 F.3d at 163, and

thus the statement was not necessary for the Court’s holding. See

Tyler v. Cain, 533 U.S. 656, 663 n.4 (2001) (noting that dictum is “not

binding” and is different from a holding, with dictum not being

necessary to the end result (citation omitted)).

-33awhether the agency received any testimony under

oath, affirmation, or penalty of perjury; and (5)

whether the agency acted ultimately as a matter of

discretionary authority or instead acted in

accordance with more definite standards subject to

judicial review.

U.S. Futures Exch., L.L.C., 953 F.3d at 960; see also

Mercatus Grp., LLC, 641 F.3d at 844-48 (noting that

whether an agency is acting in an adjudicative or

legislative capacity is circumstance dependent).

The record here shows that Merck’s communications

with the FDA occurred in the adjudicative context.

Specifically, (1) the nature of the proceeding was similar

to a judicial proceeding in that the FDA was evaluating

the evidence to determine whether, and to what extent, to

impose sanctions on Merck; (2) the factfinding was

conducted by independent, subject-matter experts; (3) the

decision-making was made by unelected experts, not

subject to the whims of political pressure; (4) false

statements to the FDA are subject to criminal penalties,

see 18 U.S.C. § 1001; and (5) the threatened actions in the

FDA’s Warning Letter would have been subject to judicial

review, see 21 C.F.R. § 12.140 (procedures for judicial

review of the FDA Commissioner’s final decisions). See

U.S. Futures Exch., L.L.C., 953 F.3d at 960; cf. St.

Joseph’s Hosp., Inc. v. Hosp. Corp. of Am., 795 F.2d 948,

950-55 (11th Cir. 1986) (concluding that an antitrust case

based on alleged misrepresentations to a state licensing

authority could move forward because the agency acted

more judicially than legislatively).

Accordingly, because (1) there is a misrepresentation

exception to Noerr-Pennington immunity for petitioning

activity in adjudicative proceedings; (2) the exception may

-34aapply here because Merck’s communications with the

FDA occurred in an adjudicative setting; and (3) there are

factual disputes about whether Merck knowingly and

intentionally made material misrepresentations to the

FDA, I would affirm the order denying Merck summary

judgment and allow a jury to resolve those disputes and,

based upon those findings, allow the District Court to

determine whether an exception bars Merck from being

cloaked with Noerr-Pennington immunity.7 See Rock

River Commc’ns, Inc. v. Universal Music Grp., Inc., 745

F.3d 343, 352 (9th Cir. 2014) (noting that it is premature

and “not appropriate” to rule on exceptions to NoerrPennington “where the facts are disputed”

(characterizing Clipper Exxpress v. Rocky Mountain

Motor Tariff Bureau, Inc., 690 F.2d 1240, 1253-54 (9th

Cir. 1982))).

II

Separately, even if we were to ignore Merck’s

petitioning activity with respect to its Form 483, Warning

Letter, and BDPR communications with the FDA,8 the

remaining facts, viewed in Plaintiffs’ favor, provide a basis

for a reasonable jury to find that Merck engaged in

7

Although the briefing and oral argument focused on the sham

exception, the briefs mention the misrepresentation exception. Thus,

it is fairly before us, and “[w]e may affirm on any ground supported

by the record as long as the appellee did not waive – as opposed to

forfeit – the issue.” Montemuro v. Jim Thorpe Area Sch. Dist., 99

F.4th 639, 646 (3d Cir. 2024) (quotation marks, italics, and alteration

omitted). Moreover, Appellee’s suggestion that the misrepresentation

exception is not recognized in this Circuit was not a waiver as it was

not an “intentional relinquishment or abandonment of a known right”

because the statement was premised upon an incorrect understanding

of our precedent. Id. (internal quotation marks and citation omitted).

8

Merck seeks to invoke Noerr-Pennington immunity only for

these three activities.

-35aunlawful anticompetitive behavior.9 In short, the record,

viewed in Plaintiffs’ favor, shows that (1) Merck’s MMRII label was approved in the 1970s and was continually

used thereafter; (2) decades after the label was approved,

Merck learned that the public-facing label may not be

accurate with respect to the seroconversion rate10 and

potency/shelf-life claims,11 and withheld that information

from the public;12 and (3) Merck was reluctant to modify

the claims on its approved label because doing so would

make it easier for its competitor, GSK, to enter the

market and cut into Merck’s monopoly and profits.13

9

I am not treating Noerr-Pennington as an evidentiary rule, see

Majority Op. at *24, but rather, I am examining the record to

determine whether there is a basis for antitrust liability without

regard to Merck’s three FDA petitioning activities at issue in this

case.

10

Merck knew that data suggested that its mumps vaccine was

not providing the protection its label suggested against the types of

virus strains people would likely encounter.

11

Specifically, Merck’s internal documents show that it knew

that even after overfilling the vaccine, it could not guarantee that by

end-expiry its potency claims on its label would be accurate. Indeed,

Merck’s scientist who was tasked with developing the assay used to

support its label claims designed the assay with that goal in mind and

“without considering the impact on accuracy.” App. 5133-34.

Moreover, Merck acknowledged internally that there was no

correlation between the ELISA assay it designed and the results from

the more accurate PRN assay. Accordingly, there are factual disputes

about whether Merck’s label claims were supported by the science.

12

Merck was aware that the public would want to know this

information and that disclosure about sub-potent vaccine lots could

have resulted in a recall, vaccine tracing, and large numbers of

revaccinations.

13

See, e.g., App. 5031 (Merck presentation noting that “[r]elaxing

the criteria for success would lower the bar for the competition”); App.

5037 (Merck email noting “lowering the seroconversion rate in the

label would help GSK”); App. 5379 (Merck memo noting its decisions

-36aTherefore, focusing only on what Merck learned about

potential inaccuracies on its label after the label was

approved14 and its internal reaction to that data, including

about whether to pursue label and testing changes could “facilitate

licensure of Priorix”); App. 4962 (Merck report noting commercial

impacts of reducing shelf life); App. 7716 (Merck email noting

“concern if [GSK] has better sensitivity and higher seroconversion

rates – competition??”); App. 4840 (Merck Defense Action Plan noting

MMR-II was “under threat of significant change and disruption due

to” GSK); App. 4844 (Merck likewise noting MMR-II was “under

imminent threat”); App. 5195 (Merck acknowledging that Priorix'’s

licensure would “significantly increase competition”); App. 5291

(Merck noting its “defensive activity”); App. 4840-42 (Merck Defense

Action Plan Background); App. 5291-92 (Merck email regarding

strategy in light of GSK licensing efforts).

For every month that Merck maintained its monopoly by

keeping GSK out of the market, it earned an additional $10 million in

revenue. In light of Merck'’s financial interest in keeping GSK out of

the market, a reasonable jury could conclude that Merck knowingly

stood by its label'’s misrepresentations to (1) make it harder for GSK

to gain FDA approval and thus (2) thwart competition. Evidence that

GSK paused developing its MMR vaccine after it could not mirror

Merck'’s label corroborates such a conclusion. To be sure, other

factors could have contributed to the GSK vaccine'’s pause, e.g.,

budget constraints. However, a jury could reasonably conclude that

GSK'’s budget would not have been prohibitively constrained were it

not for extra-high costs of matching Merck'’s misleading label.

Accordingly,

a

jury

should

decide

whether

Merck'’s

misrepresentations or omissions, or GSK'’s own business decisions,

delayed GSK'’s entry into the market.

14

Plaintiffs do not assert that Merck made any knowing

misrepresentations in connection with its FDA communications

associated with the original approval of MMR-II. Nor do they do not

seek to hold Merck liable for any petitioning activity arising from

those communications. This is a critical distinction because Merck'’s

decision to continue to include misrepresentations on its public-facing

label is divorced from any petitioning activity associated with the

label'’s original approval as the misrepresentations and omissions at

issue here occurred only after the label was already approved.

-37awithholding information about the label’s inaccuracies

from the public to protect Merck’s monopoly,15 the record

viewed in Plaintiffs’ favor would permit a reasonable jury

to find that Merck violated the antitrust laws by engaging

in anticompetitive acts that are “on some basis other than

the merits.” LePage’s Inc. v. 3M, 324 F.3d 141, 147 (3d

Cir. 2003) (en banc).16

Therefore, the original petitioning activity is independent from

Merck'’s decision to maintain its label for the express purpose of

preventing GSK from entering into the mumps vaccine market.

15

See, e.g., App. 5506 (Merck email noting data suggested it

would “need to get [a] label change”).

16

Additionally, viewing the facts in Plaintiffs’ favor, a reasonable

jury could find that Merck’s actions caused Plaintiffs’ injuries because

(1) GSK was clearly “willing and able to supply [Priorix] but for

[Merck’s] exclusionary conduct[,]” Meijer, Inc. v. Biovail Corp., 533

F.3d 857, 862 (D.C. Cir. 2008); and (2) Plaintiffs’ injury—lack of price

erosion and therefore higher prices for the mumps vaccine—was

directly related to Merck’s successful efforts to keep GSK out of the

marketplace. Moreover, contrary to my Colleagues’ assertion, see

Maj. Op. at *27, a reasonable jury viewing the facts in Plaintiffs’ favor

could conclude that the need for the FDA to approve a license for

GSK’s vaccine before GSK could enter the market does not break the

chain of causation because (1) the FDA was not an intervening actor

because GSK put its licensing efforts on hold due in part to the

challenges it faced mirroring Merck’s allegedly misleading label even

before going through the FDA approval process; and (2) GSK’s

delayed market entry, based on the FDA’s requirement that it mirror

Merck’s label claim, was a foreseeable consequence of Merck’s alleged

label misrepresentations, see In re Flonase Antitrust Litig., 798 F.

Supp. 2d 619, 629 (E.D. Pa. 2011) (“Intervening conduct does not

sever the chain of causation [ ] where that conduct was in turn

proximately caused by the defendant’s antitrust violation.

Intervening conduct also does not sever the chain of causation where

that conduct was a foreseeable consequence of the original antitrust

violation.”); see also In re Suboxone Antitrust Litig., 622 F. Supp. 3d

22, 78 (E.D. Pa. 2022) (same). The jury may also consider whether the

actions of the FDA broke the chain of causation.

-38aIII

For the foregoing reasons, I would affirm the District

Court’s order denying Merck summary judgment and as

a result, respectfully dissent.

-39aAppendix B

___________________

IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF

PENNSYLVANIA

IN RE: MERCK

MUMPS VACCINE

ANTITRUST

LITIGATION

THIS DOCUMENT

RELATES TO:

ALL ACTIONS

:

:

:

:

:

:

:

:

:

:

CIVIL ACTION

Master File No. 12-3555

MEMORANDUM

Kenney, J.

July 27, 2023

Chatom Primary Care, P.C., Andrew Klein, M.D., and

John I. Sutter, M.D. (collectively, “Plaintiffs”) bring this

proposed class action on behalf of direct purchasers of

Defendant Merck & Co., Inc.’s (“Merck”) mumps

vaccines. Plaintiffs’ remaining claims allege that they

were overcharged for Merck’s mumps vaccines as a result

of Merck’s unlawful monopolization of the Mumps Vaccine

Market in violation of Section 2 of the Sherman Act and

New Jersey and New York state laws. Plaintiffs’ case

arises from the same underlying allegations of fraud that

spawned the related False Claims Act (“FCA”) case, U.S.

ex rel. Krahling v. Merck & Co., Inc., 10-cv-4374 (E.D.

Pa.). Presently before the Court are Merck’s Motion for

Summary Judgment (ECF No. 272) and Merck’s Motion

-40ato Exclude Evidence from Dr. Thomas Copmann

Pursuant to Federal Rule of Evidence 702 and Daubert

(ECF No. 305). These motions have been fully briefed.

For the reasons set forth below, Merck’s Motion for

Summary Judgment is granted in part and denied in part,

and Merck’s Motion to Exclude Evidence from Dr.

Thomas Copmann is denied. An appropriate Order will

follow.

I. BACKGROUND

This Section will begin by providing a brief overview of

the vaccine approval process in the United States. Then

the Court will discuss Merck’s mumps vaccines, mumps

cases in the United States following the introduction of a

vaccine, GlaxoSmithKline’s (“GSK”)1 mumps vaccines,

Merck’s alleged unlawful conduct, and finally, GSK’s path

to approval of its mumps vaccine. The facts set forth in this

Section are derived from the undisputed evidence of

record submitted by the parties and the disputed evidence

of record viewed in the light most favorable to Plaintiffs.2

1

GSK was previously known as “SmithKlineBeecham,” “SKB,”

or “SB.” See ECF 295 at 8 n.5.

2

The Court notes that in response to many of the facts Plaintiffs

put forth in their Corrected Statements of Disputed Material Facts

concerning Merck’s alleged anticompetitive conduct, Merck did not

admit or dispute the facts, but rather, claimed the facts “do not bear

on the issues material to Merck’s Motion for Summary Judgment.”

See ECF No. 301 at 1. The Court finds Merck’s position that its

purported unlawful conduct is not material to the arguments

contained in its Motion for Summary Judgment unconvincing. For

example, Merck’s first argument is that even if Merck had submitted

fraudulent information to the government, this amounts to petitioning

activity that is protected from antitrust liability under the NoerrPennington doctrine. However, Merck refused to admit or dispute

the facts relating to those submissions to the government. Given the

fact that Merck incorporated by reference its Motions for Summary

-41aA. The Vaccine Approval Process in the United

States

Bringing a vaccine to market in the United States is an

expensive, complex, and rigorous endeavor. In order to

sell a vaccine in the United States, Food and Drug

Administration (“FDA”) approval and licensure are

required. ECF No. 274 ¶ 58; ECF No. 277 ¶ 58. In deciding

whether to license a vaccine, the FDA assesses the

vaccine’s safety, efficacy, manufacturing, and product

labeling. ECF No. 274 ¶ 60; ECF No. 277 ¶ 60. As to safety

and efficacy, the FDA bases its analysis on three phases

of clinical trials. ECF No. 274 ¶ 61; ECF No. 277 ¶ 61.

However, before beginning any clinical trials, a

pharmaceutical

manufacturer

must

submit

an

Investigational New Drug application (“IND”) to the

FDA. ECF No. 274 ¶ 62; ECF No. 277 ¶ 62. An “IND

describes the vaccine, the method of manufacture, []

quality control tests for release, [and also] . . . information

about the vaccine’s safety and ability to elicit a protective

immune response (immunogenicity) in animal testing, as

well as the proposed clinical protocol for studies in

humans.” Id. Thereafter, three phases of clinical trials

proceed as follows. In Phase I, “small groups of people

receive the trial vaccine.” ECF No. 274 ¶ 61; ECF No. 277

¶ 61. “In Phase II, the clinical study is expanded and [the]

vaccine is given to people who have characteristics (such

as age and physical health) similar to those for whom the

new vaccine is intended.” Id. Finally, “[i]n Phase III, the

vaccine is given to thousands of people and tested for

Judgment in the FCA Action, many of the facts can be deemed

undisputed. See ECF No. 273 at 9 n.1. In any event, the Court must

view the evidence in the light most favorable to the nonmoving party

and it will do so as to those facts Merck did not admit or dispute.

-42aefficacy and safety.” Id. Once these three phases are

completed, manufacturers submit a Biologics License

Application (BLA) to the FDA for approval of the vaccine

for use in the United States. ECF No. 274 ¶ 73; ECF No.

277 ¶ 73.

B. Merck’s Mumps Vaccines

Merck was the first licensed mumps vaccine provider

in the United States and the sole licensed mumps vaccine

provider in the United States from 1967 until June 2022,

when the FDA licensed GSK’s mumps vaccine. ECF No.

267 ¶ 1; ECF No. 277 ¶ 1; FDA, June 3, 2022 Approval

Letter

–

PRIORIX,

https://www.fda.gov/media/158962/download (last visited

July 25, 2023). Currently, Merck sells two vaccines which

contain a mumps component: MMR-II and ProQuad. ECF

No. 267 ¶ 2; ECF No. 277 ¶ 2. MMR-II was licensed in the

United States in 1978 and is a trivalent product containing

vaccines for measles, mumps, and rubella (“MMR”). ECF

No. 267 ¶ 1; ECF No. 277 ¶ 1. ProQuad was licensed in the

United States in 2005 and is a quadrivalent product

containing vaccines for measles, mumps, rubella, and

varicella (chicken pox) (“MMRV”). Id.

C. Mumps Cases Following a Vaccine

The CDC reports that after Merck introduced the

mumps vaccine in 1967, mumps cases in the United States

decreased by more than 99%. ECF No. 274 ¶ 7; ECF No.

277 ¶ 7. Specifically, mumps cases decreased “from

152,209 in 1968 to 231 in 2003.” CDC, Mumps Cases &

Outbreaks, https://www.cdc.gov/mumps/outbreaks.html

(last visited July 25, 2023). Notably, however, “mumps

cases and outbreaks reported in the United States have

increased since 2006” with most of these cases involving

-43apeople who were vaccinated.3 Id. The CDC currently

reports that two doses of the mumps vaccine are 88%

(range 31% to 95%) effective at preventing mumps. ECF

No. 274 ¶ 6; ECF No. 277 ¶ 6. In April 2019, the director

of the FDA’s Center for Biologics Evaluation and

Research (“CBER”) issued a statement reaffirming that

the FDA “work[s] diligently to assess safety and

effectiveness of all licensed vaccines for their intended

uses [and] [t]he MMR vaccine is very effective at

protecting people against measles, mumps, and rubella.”

ECF No. 275-8 at 3.

D. GSK’s Mumps Vaccines

GSK, like Merck, manufactures two mumpscontaining vaccines. First, GSK manufactures Priorix, an

MMR (measles, mumps, rubella) vaccine, which was first

licensed for sale in Europe in 1998 and was then licensed

in the United States in 2022.4 ECF No. 274 ¶¶ 49, 52; ECF

3

According to the CDC, in 2006, 6,584 cases of mumps were

reported in the United States. In 2007, there were 800 reported cases

of mumps. In 2008, 454 cases were reported. In 2009, 1,991 cases were

reported. In 2010, 2,612 cases were reported. In 2011, 404 cases were

reported. In 2012, 229 cases were reported. In 2013, 584 cases were

reported. In 2014, 1,223 cases were reported. In 2015, 1,329 cases

were reported. In 2016, 6,366 cases were reported. In 2017, 6,109

cases were reported. In 2018, 2,251 cases were reported. In 2019,

3,780 cases were reported. In 2020, 616 cases were reported. In 2021,

154 cases were reported. In 2022, 322 cases were reported. See CDC,

Mumps

Cases

&

Outbreaks,

https://www.cdc.gov/mumps/outbreaks.html (last visited July 25,

2023); see also ECF No. 277 ¶ 7 n.3.

4

In June 2022, after the conclusion of briefing for the present

motions, but prior to oral argument, the FDA approved GSK’s Priorix

vaccine. See FDA, June 3, 2022 Approval Letter – PRIORIX,

https://www.fda.gov/media/158962/download (last visited July 25,

2023).

-44aNo. 277 ¶¶ 49, 52. Second, GSK manufactures PriorixTetra, an MMRV (measles, mumps, rubella, varicella)

vaccine, which is licensed outside the United States. ECF

No. 274 ¶¶ 50–51; ECF No. 277 ¶¶ 50–51. The mumps

strain contained in GSK’s Priorix and Priorix-Tetra

vaccines is derived from the mumps strain in Merck’s

mumps-containing vaccines. ECF No. 274 ¶ 54; ECF No.

277 ¶ 54. GSK does not view the mumps component in

Priorix as different from the mumps component in

Merck’s MMR-II, and GSK’s clinical studies show that

GSK’s mumps component is noninferior to Merck’s

mumps component. ECF No. 274 ¶ 57; ECF No. 277 ¶ 57.

In the FDA’s Summary Basis for Regulatory Approval of

Priorix, the Review Committee confirmed this, finding:

“In clinical studies, vaccine-specific antibody responses to

measles, mumps, and rubella viruses following

administration of PRIORIX were shown to be noninferior to antibody responses induced by the licensed MM-R II vaccine.” FDA, June 3, 2022 Summary Basis for

Regulatory

Action

for

PRIORIX,

https://www.fda.gov/media/159545/download (last visited

July 25, 2023).

E. Merck’s Alleged Anticompetitive Conduct

Based on the allegations in the related FCA case,

Plaintiffs contend that Merck’s submissions to the FDA

and, in turn, its labels for its mumps vaccines contain false

and misleading information related to the efficacy and

seroconversion rates of Merck’s mumps vaccines and

because of this conduct, Merck precluded GSK from

obtaining a license to sell its MMR vaccine and caused

Plaintiffs to be overcharged. See generally Amended

Complaint, ECF No. 26. Outlined below is an overview of

the specific evidence relating to Merck’s competitive

-45aintelligence regarding GSK’s potential entrance into the

Mumps Vaccine Market and Merck’s alleged false and

misleading conduct as to its mumps vaccines.

1. Merck Learns of GSK’s Potential Entrance

In the late 1990s, Merck recognized that MMR-II was

under “imminent threat of a major competitive launch” in

the United States from GSK’s Priorix. ECF No. 295-1 ¶

31; ECF No. 301 ¶ 31; see also ECF No. 286, Ex. 81.

Internal Merck documents reveal that in the face of GSK’s

impending launch, in 1996, Merck established a

“Competitive Defense Task Force for M-M-R II.” ECF

No. 295-1 ¶ 32; ECF No. 301 ¶ 32; ECF No. 286, Ex. 81.

These documents indicate that the marketing elements for

the MMR-II Competitive Defense Task Force were to: (1)

“Pursue a proactive tactical plan including initiatives to

delay and disrupt the launch of Priorix into the market”;

(2) “Launch a marketing and positioning plan to maintain

the [MMR-II] advantage by preserving share in priority

segments and emphasizing the long-term safety and

efficacy profile”; and (3) “Set the stage for a new product

platform including the use of recombinant albumin and the

introduction of MMRV.” ECF No. 286, Ex. 81 at MRKCHA00285279. In June 1999, the Competitive Defense

Task Force for MMR-II reported that since the Task

Force was created in 1996, the “team has succeeded in

‘raising the bar’ for the competition at every available

opportunity including a successful presentation to CBER

in January [and] [a]lthough, we will probably never know

whether that presentation had the effect of raising issues

for the Priorix file, we do know that [GSK] will most likely

not launch in the U.S. until 4Q99.” Id. at

MRKCHA00285278.

-46a2. Merck Mumps Vaccine Label Claim Issues

In the late 1990s, around the same time Merck learned

of GSK’s imminent threat of launch in the United States,

Merck and CBER engaged in discussions concerning the

potency figure on Merck’s mumps label. ECF No. 295-1 ¶

36; ECF No. 301 ¶ 36. At that time, the MMR-II label

specified that “the dose . . . contains not less than . . . 20,000

TCID50 of the . . . Mumps Virus” (the “Potency Claim”).

Id. TCID stands for Tissue Culture Infectious Dose and is

a measure of vaccine potency (i.e., the volume of live cells

in the vaccine), which vaccine manufacturers and the FDA

typically convert to a log10 scale. Id. Thus, the potency on

the label equated to 4.3 on a log10 scale. ECF No. 295-1 ¶

37; ECF No. 301 ¶ 37. During Merck’s communications

with CBER, it became evident that “the agency did not

agree with [Merck’s] proposal that the specifications

noted in [Merck’s] label were the minimum release

potencies for [MMR-II]. Instead, [CBER] defined these

specifications as end-expiry potencies,” meaning it wanted

the labeled potency to be the amount of live virus in the

vaccine at the end of its shelf life, which for MMR-II has

always been 24 months. ECF No. 295-1 ¶ 36; ECF No. 286,

Ex. 82 at MRK-CHA00207706. Accordingly, as an interim

measure to comply with CBER’s request, Merck

“overfilled” its mumps vaccines (i.e., put more live virus in

each dose) in order to ensure that the vaccine would

comply with the 4.3 log10 potency claim at the end of the

24-month shelf life. ECF No. 295-1 ¶ 41. Merck continues

to overfill each mumps vaccine dose to this day. Id.

In 2000, after Merck implemented the “overfill,” FDA

inspectors visited Merck’s manufacturing division and

-47aissued a Form 483,5 which cited Merck’s failures in

reporting mumps vaccines lots that fell below the potency

claim prior to the expiry of the 24-month shelf life. ECF

No. 295-1 ¶ 42. Merck submitted a response to the Form

483, but the issues identified in the Form 483 were raised

again by the FDA in a February 9, 2001, Warning Letter.

ECF No. 295-1 ¶ 42; ECF No. 295-1 ¶ 42. A Warning

Letter is issued to a manufacturer when the “FDA finds

that a manufacturer has significantly violated FDA

regulations.” FDA, About Warning and Close-Out

Letters,

https://www.fda.gov/inspections-complianceenforcement-and-criminalinvestigations/warningletters/about-warning-and-close-out-letters (last visited

July 25, 2023). The February 2001 Warning Letter

indicated that “investigators reported that the data in

[Merck’s] files showed that a number of . . . lots

manufactured before the formulation was changed during

February 2000 failed to meet the minimum potency

specification.”

ECF

No.

286,

Ex.

124

at

MRKCHA00209402. The Warning Letter directed Merck

to “submit an analysis of Mumps stability data describing

the range of potencies you would expect the various

Mumps Vaccine products to reach at the two-year

expiration date.” Id. In creating this analysis, the FDA

directed Merck to “assume the initial potency is the

minimum release potency specification that was in effect

5

“An FDA Form 483 is issued to firm management at the

conclusion of an inspection when an investigator(s) has observed any

conditions that in their judgment may constitute violations of the

Food Drug and Cosmetic (FD&C) Act and related Acts.” FDA, FDA

Form

483

Frequently

Asked

Questions,

https://www.fda.gov/inspections-compliance-enforcement-andcriminalinvestigations/inspection-references/fda-form-483frequently-asked-questions (last visited July 25, 2023).

-48abefore 2000” and “summarize the available data regarding

product efficacy at the lower end of this potency range.”

Id. In concluding, the Warning Letter stated that

“[f]ailure to promptly correct these deviations may result

in regulatory action without further notice” which could

include “license suspension and/or revocation.” Id.

In developing its response to the Warning Letter,

Merck internally identified it had, prior to increasing the

release potency, released to market 225 lots of MMR-II

that had an end-expiry potency potentially lower than 4.3

log10 minimum mumps potency specification, with 107 of

these lots being “a compliance issue,” as they were

projected to, at 24 months, fall below 4.0 log10.6 ECF No.

295-1 ¶ 43; ECF No. 286, Ex. 128. Merck instituted a “Fact

Finding” (“a prelude to a potential product recall”) to

track down all 107 lots that were a potential compliance

issue. ECF No. 286, Ex. 128. While drafts of Merck’s

Warning Letter response referenced these “sub-potent

lots,” Merck’s final version of its response did not

specifically mention these lots. ECF No. 295-1 ¶ 46; see

also ECF No. 286, Ex. 130 (draft 2001 Warning Letter

Response); ECF No. 286, Ex. 131 (draft 2001 Warning

Letter Response); ECF No. 286, Ex. 132 (Merck’s Mar. 8,

2001 Response to February 2001 Warning Letter).

Instead, Merck responded to the FDA’s Warning Letter

by explaining:

6

While Merck’s email discussing the issue and its working drafts

of its response to the February 2001 Warning Letter reference 223

lots being at risk of falling below 4.3 log10 and of those 223, 106 lots

being at risk for falling below 4.0 log10, Plaintiffs point out that the

spreadsheet attached to the email identifies 255 and 107 lots,

respectively. See ECF No. 295-1 ¶ 43 n.78.

-49a[I]f it is assumed that the initial potency is 4.3 log

TCID50/dose, the minimum release potency specification

in effect prior to February 2000, the expected average

potency at expiry is 3.6 log TCID50/dose. In order to

estimate the range of potencies around the average loss

rate, the standard deviation of the loss rate was calculated

and found to be 0.3 logs. Therefore, the 95% upper and

lower confidence limits for mumps potency at the end of a

two year expiry is estimated to be 3.9 and 3.3 log

TCID50/dose, respectively.

ECF No. 132 at MRK-CHA01537609. In March and

April of 2001, Merck sent the FDA two Biologics Product

Deviation Reports (“BPDRs”), reporting similar potency

problems, but represented that the “overfill” solved the

issue. ECF No. 295-1 ¶ 48; ECF No. 292, Ex. 269 (March

2001 BPDR), Ex. 270 (April 2001 BPDR). In April 2001,

the FDA closed its Warning Letter without requiring any

lots to be withdrawn from the market. ECF No. 302 at 15–

16.

Internal correspondence in 2002 at Merck indicates,

however, that Merck’s “corrective actions (adding more

mumps and increasing the release specification) did not

ensure [Merck met] 4.3/dose at expiry as previously

indicated.” ECF No. 295-1 ¶ 48; ECF No. 287, Ex. 137.

Instead, Merck calculated that “approx. 7% of the lots

[were] expected to be <4.3 at expiry.” Id. Merck

questioned whether the FDA would have responded

differently if it knew about the potency values below

4.3/dose. Id. Additional internal documents and

correspondence from this time indicate that if Merck’s

potency claim were to remain at 4.3 log10 at expiry, the

shelf life would need to be changed to 12 months or less,

but that such adjustment would have a commercial impact,

-50aincluding “[i]nternational loss of share due to a

competitive disadvantage ([GSK’s proposed vaccine is] at

24 months).” ECF No. 295-1 ¶ 50; see also e.g., ECF No.

287, Ex. 140.

Apart from implementing the overfill in 1999,

beginning in 1997, Merck also discussed with the FDA

conducting a clinical trial to support a label change of a

mumps end-expiry potency lower than 4.3 log10. ECF No.

295-1 ¶ 57. This clinical trial would become known as

Protocol 007, officially titled “A Study of M-M-R II at

Mumps Expiry Potency in Healthy Children 12-18

Months of Age.” ECF No. 295-1 ¶ 57. Two types of tests

were used in Protocol 007: (1) a plaque reductions

neutralization assay (“PRN”) and (2) an enzyme linked

immunosorbent assay (“ELISA”). Both of these tests are

used to measure immunogenicity, which provides

information about how a subject’s immune system

responds to different stimuli, including vaccination. ECF

No. 295-1 ¶¶ 4–6; see also, e.g., ECF No. 283 at 208. The

most common immunological response evaluated in

vaccine studies is the development of antibodies induced

by the vaccine. ECF No. 295-1 ¶ 4. One way to measure

immunogenicity is “seroconversion,” which refers to a

person going from being “seronegative” prior to

vaccination, which generally means lacking pathogen

specific antibodies, to being “seropositive” after

vaccination, which means possessing such antibodies. Id.

a) The PRN

A PRN indirectly measures antibodies based on their

capacity to neutralize the virus of interest. ECF No. 2951 ¶ 7. A PRN is considered a functional immunogenicity

assay—meaning it evaluates the functioning of the

antibodies, not merely their presence. ECF No. 283 at 210.

-51aIn a PRN, a blood serum is incubated with the virus in a

clear well (i.e., a container). ECF No. 295-1 ¶ 8. If the virus

is not neutralized, the virus causes “plaques” (or holes) in

the cells. Id.; see also ECF No. 283 at 293–94. The theory

is that if the test sample has neutralizing antibodies, they

will prevent the virus from infecting the cells, meaning

there would be fewer plaques. ECF No. 283 at 294. In the

Protocol 007 PRN, pre-vaccinated serum samples are

compared to post-vaccinated serum samples to determine

if, as a result of vaccination, the child could be said to have

seroconverted. ECF No. 295-1 ¶ 8. The PRN in Protocol

007 was designed to compare seroconversion rates across

higher and lower potencies. ECF No. 295-1 ¶ 58. CBER

set two statistical criteria that the experimental groups

had to meet in order to consider the lower potency

acceptable as compared to the existing potency. ECF No.

286, Ex. 95 at MRK-CHA00001468. First, the

seroconversion rate in the group receiving the candidate

end-expiry potency could not be more than 5% less than

the seroconversion rate in the group receiving the control,

and second, the lower limit of the confidence interval of

the seroconversion rate in the group receiving the

candidate end-expiry potency would have to be above 90%.

Id.

Initially, Merck engaged in initial testing using its

mumps virus strain (i.e., the Jeryl Lynn strain) and other

“wild-type” virus strains, meaning those naturally

occurring. ECF No. 295-1 ¶ 62. However, initial testing of

the wild-type virus resulted in seroconversion rates well

below 95%, so Merck used the Jeryl Lynn strain, which

was yielding seroconversion above 90%. Id. Additionally,

Merck included rabbit antibodies, specifically anti-human

Immunoglobin G (“antiIgG”) in the serum samples. ECF

-52aNo. 295-1 ¶ 65. This anti-IgG PRN was referred to as the

AntiIgG Enhanced Neutralization Test (“AIGENT”). Id.

After finalizing the design of the PRN, Merck

performed the AIGENT in a research lab supervised by

Dr. David Krah. ECF No. 295-1 ¶¶ 73–74. According to

the relators in the related FCA case, Dr. Krah directed his

lab staff to selectively recount pre-positive samples and

change pre-positive samples to make them pre-negative,

and also directed his staff to falsify data. Id. ¶ 74. Once the

FDA was made aware of these allegations, FDA

investigated and issued a Form 483, listing among other

observations that “raw data [was] being changed with no

justifications.” Id. ¶ 80; see also ECF No. 289, Ex. 219

(August 6, 2001 Form 483).

b) The ELISA

The second test that was performed as part of Protocol

007 was an ELISA. In an ELISA, serum samples are

added to a plastic microtiter wells coated with antigens—

which are structures that bond to particular antibodies.

ECF No. 283, Ex. 55 (Pasetti Report). If the serum

contains antigen-specific antibodies, those antibodies bind

to the antigens, triggering a secondary reaction that

changes the color of the solution. Id. This color can be

measured by a device called a spectrophotometer to

determine whether or not there has been sufficient color

change to identify a positive result. Id.

c) Merck’s MMR-II sBLA

Initially, to be allowed to support a supplemental

Biologics License Application (“sBLA”) to lower the

minimum mumps potency specification on the MMR-II

label with the Protocol 007 testing, Merck was instructed

by the FDA to demonstrate a correlation between the

-53aresults of Merck’s ELISA and AIGENT tests. ECF No.

295-1 ¶ 70. Based on the data produced in the Protocol 007

study, Merck submitted an sBLA in January 2004

requesting a lower potency figure on its label. ECF No.

283, Ex. 39 (Kessler Report) ¶ 330. In 2007, CBER

determined that “the information and data submitted are

inadequate for final approval.” Id. ¶ 333. CBER also

noted: “[h]owever, the science related to immunogenicity

of [MMR II] has substantially evolved since our initial

testing requirements [and] use of ELISA data to evaluate

the effect of difference in product potency is now

acceptable.” Id. ¶ 336. In response, Merck submitted an

amendment providing additional information, including

data from the Protocol 007 ELISA and ELISA data from

previous Merck studies. In December 2007, the FDA

approved Merck’s sBLA to change the labeled potency

from 4.3 to 4.1 log10 TCID50. Id.

d) Merck’s ProQuad BLA

In August 2004, Merck submitted its ProQuad BLA.

ECF No. 283, Ex. 39 (Kessler Report) ¶ 330. To support

this application, Merck used data from Protocol 007 and

provided information about the correlation between the

PRN and the ELISA from Protocol 007. ECF No. 288, Ex.

183 ¶ 116. In September 2005, the FDA approved Merck’s

ProQuad BLA. Id. ¶ 332.

F. GSK’s Path to FDA Approval

To obtain approval of its mumps vaccine, GSK

understood that it needed to conduct headto-head clinical

trials to study the immunogenicity and safety of MMR-II

versus Priorix and demonstrate that Priorix was noninferior to MMR-II. ECF No. 274 ¶¶ 63, 65; ECF No. 277

¶¶ 63, 65. Accordingly, as GSK’s corporate designee

testified, the clinical development plan for Priorix was

-54abased on mirroring Merck’s label. ECF No. 295-1 ¶ 131;

ECF No. 301 ¶ 131. GSK understood this process would

be very costly and time-consuming. ECF No. 274 ¶¶ 63,

65; ECF No. 277 ¶¶ 63, 65. For the Phase III clinical trials

for Priorix, the FDA required GSK to conduct five

separate studies: four non-inferiority studies and one

safety study. ECF No. 274 ¶ 66; ECF No. 277 ¶ 66. As

GSK explained, clinical trials involving children typically

cost a minimum of $10 million and involve more

burdensome documentation compared to clinical trials

with only adults. ECF No. 274 ¶ 67; ECF No. 277 ¶ 67.

GSK began this process in July 1997 when it submitted

an IND to the FDA to begin clinical trials for Priorix. ECF

No. 274 ¶ 68; ECF No. 277 ¶ 68. However, in August 1997,

the FDA put GSK’s Priorix program “on clinical hold” due

to concerns, including about GSK’s safety data, indicating

that the FDA needed additional data concerning

“neurovirulence testing, the ELISA assay used to

determine seronegativity and the reverse transcriptase

assay testing of the viral seed and viral bulk.” ECF No.

274 ¶ 69, ECF No. 277 ¶ 69; ECF No. 280-1 at 220; ECF

No. 275-19 at 2. Thereafter, in March 1998, the FDA sent

GSK a letter with fifty-two comments on GSK’s proposed

clinical development plan for Priorix. ECF No. 274 ¶ 70;

ECF No. 277 ¶ 70. GSK internally summarized the FDA’s

comments as criticisms of its proposed United States IND

study, including the proposed study’s design and the types

of assays to be used to test each vaccine component, and

criticisms concerning other studies to be submitted in its

BLA, including the quality of data derived from GSK’s

clinical testing outside the United States, the safety of the

mumps strain, and the sample sizes of those studies. Id.

Following discussions between the FDA and GSK, in June

-55a1998, the FDA lifted the clinical hold. ECF No. 274 ¶ 71;

ECF No. 277 ¶ 71; ECF No. 280-1 at 227, 233.

Nonetheless, discussions between the FDA and GSK

concerning the clinical development of Priorix continued

with the FDA requesting information on, inter alia,

vaccine lots, documentation of the measles virus strain

development, and how GSK intended to validate assays

used to test the measles, mumps, and varicella

components. ECF No. 274 ¶ 72; ECF No. 277 ¶ 72. In

March 1999, the FDA denied GSK’s request for a “preBLA meeting,” which typically occurs before a

manufacturer submits a final BLA for vaccine approval.

ECF No. 274 ¶ 73; ECF No. 277 ¶ 73. GSK believed the

FDA denied their request for the pre-BLA meeting

because the “FDA does not consider [the] safety database

as acceptable” and “FDA needs [an] additional safety

study.” ECF No. 275-23 at 5. Then, in October 1999, GSK

internally reported that the FDA’s decision to require an

additional safety study remained unchanged. ECF No.

275-13 at 11; ECF No. 274 ¶ 76; ECF No. 277 ¶ 76. GSK

estimated that this safety study requested by the FDA

would cost between $10 million to $20 million, and GSK

wanted to “avoid” conducting such a large safety study.

ECF No. 275-25 at 5–6; ECF No. 274 ¶¶ 75, 77; ECF No.

277 ¶¶ 75, 77. Comments from the FDA during this time

period also indicate that the FDA required additional

information on mumps serology. ECF No. 295-1 ¶ 137;

ECF No. 301 ¶ 137; ECF No. 295-13 at 10–11.

Thereafter, between 2000 and 2001, GSK deprioritized

development of its MMR vaccine. ECF No. 295-1 ¶ 139;

ECF No. 301 ¶ 139. The reason for this de-prioritization

was that Merck’s MMRV vaccine, ProQuad, was expected

to be on the market in 2001, and accordingly, GSK wanted

-56ato wait until the position of Merck with respect to MMRV

was clear. ECF No. 274 ¶ 78; ECF No. 277 ¶ 78. GSK

planned to follow Merck’s progress and if Merck’s MMRV

succeeded, GSK would revive its development of MMRV,

but if Merck’s MMRV failed, it would prioritize Priorix.

ECF No. 247 ¶ 80; ECF No. 277 ¶ 80. Evidence from

GSK’s documents indicates that it would cease all work

during the two-year period except it would address

outstanding MMR and Varicella IND questions, answer

FDA questions on neurovirulence, continue to work on the

level of serology in order to validate its mumps and

varicella assays for future U.S. trials, and conduct certain

neurovirulence testing. ECF No. 275-28 at 19.

In March 2002, GSK completed a risk assessment for

the development of Priorix and Priorix-Tetra in the

United States, and its marketing team recommended GSK

“[p]ursue MMRV” and “[r]e-address MMR only if MMRV

has proven not viable from a development perspective.”

ECF No. 274 ¶ 81; ECF No. 277 ¶ 81; ECF No. 275-31 at

11. GSK estimated that it would cost $33.1 million to

develop MMR, $34.8 million to develop MMRV, and a

combined $23.2 million in additional costs across both

products. ECF No. 274 ¶ 81; ECF No. 277 ¶ 81. But in

2003, GSK’s United States development of Priorix was put

on hold due to business reasons and GSK stated it would

revisit in the end of 2004 in light of study results and

competitive intelligence status. ECF No. 275-33 at 4; ECF

No. 275-34 at 7; ECF No. 274 ¶ 83; ECF No. 277 ¶ 83. One

of the business reasons for discontinuing development of

Priorix was that Merck’s MMRV vaccine was near

licensure in the United States. ECF No. 274 ¶ 84; ECF

No. 277 ¶ 84.

-57aFollowing Merck’s licensure of ProQuad in 2005, by

2006, there was a renewed interest by GSK to bring a

mumps vaccine to the United States market. ECF No.

295-1 ¶ 143; ECF No. 301 ¶ 143. After ProQuad was

approved in 2005, the CDC indicated it preferred the use

of the quadrivalent MMRV vaccine over separate

injections of MMR and varicella vaccines. ECF No. 274 ¶

87; ECF No. 277 ¶ 87.

. ECF No. 274 ¶ 89;

ECF No. 277 ¶ 89. Moreover, in 2009, the CDC updated

its recommendation to prefer separate injections of MMR

and varicella vaccines for the first dose, and MMRV,

rather than separate MMR and varicella injections, for

the second dose. ECF No. 274 ¶ 87; ECF No. 277 ¶ 87.

Accordingly, GSK shifted its focus from Priorix-Tetra

(MMRV) to Priorix (MMR), as it saw a potential

opportunity for Priorix as a first dose option. ECF No. 274

¶¶ 88–89; ECF No. 277 ¶¶ 88–89.

In 2009, Merck’s ELISA became commercially

available when Merck’s lab was purchased by an

independent research company, PPD. ECF No. 295-1 ¶

148; ECF No. 301 ¶ 148. In April 2011, GSK decided to use

Merck’s ELISA and notified the FDA of this intention in

December 2011. ECF No. 295-1 ¶ 149; ECF No. 301 ¶ 149.

In April 2012, the FDA gave GSK permission to use

Merck’s ELISA. ECF No. 295-1 ¶ 150; ECF No. 301 ¶ 150.

Accordingly, in 2012, GSK commenced five Phase III

clinical studies for Priorix, which GSK estimated would

cost between $57.1 million and $66.8 million to complete.

ECF No. 274 ¶ 91; ECF No. 277 ¶ 91.

In 2014, when GSK learned of the complaint in the

related FCA case, GSK internal correspondence

questioned whether the allegations could enable GSK to

-58abring its mumps vaccine to the United States market

sooner. ECF No. 295-1 ¶ 152; ECF No. 301 ¶ 152; see also

ECF No. 283 at 135 (email correspondence asking

whether the allegations “could have implications on our

‘non inferiority’ benchmark for the US registration??”);

see also Id. at 139 (email correspondence wondering

whether “anything will (or can) come of this??? Earlier

introduction of Priorix and Varilrix in the US????”).

Additionally, in preparing for an investor event in

2015, GSK’s Chairman of Vaccines was informed

internally that GSK’s Phase III trials started so late

because:

[D]iscussions with CBER about the Eps

[endpoints] and assays to be used in phase

III . . . proved to be protracted, since we could not

meet the serological acceptability criteria for

mumps that CBER required for Phase III success

with our mumps assay (they required “a lower

bound . . . for the response rate ≥90%”) . . . .

[U]ltimately, having access to the Merck Mumps

ELISA which they licensed to PPD facilitated

these discussions.

ECF No. 295-1 ¶ 153; ECF No. 301 ¶ 153; see also ECF

No. 283 at 56.

On January 4, 2018, GSK’s corporate designee was

deposed and explained various business and budgetary

considerations relating to GSK’s development of its

mumps vaccine in the United States. ECF No. 275-46.

Specifically, GSK explained that its leadership had

“always grappled with this vaccine for a couple of reasons;

the low sales, the impact on the portfolio is more

qualitative than quantitative, and because the schedule in

the US is such that you receive varicella the same time you

-59awould get MMR and we don’t have a varicella[.]” ECF No.

275-46 at 137:5-13. Additionally, GSK identified five

reasons why it did not yet have a mumps vaccine approved

in the United States:

1. GSK deprioritized development of mumpscontaining vaccines for business reasons, including

budgetary concerns and opportunities with other

products more in line with GSK’s business strategy

of focusing on adult vaccines;

2. GSK was concerned that Priorix sales would be

low;

3. GSK did not actively pursue Priorix prior to 2009

because it believed that the market would shift

from MMR to MMRV vaccines;

4. But then GSK did not pursue a MMRV vaccine

either, because

and

5. GSK believed a mumps-containing vaccine

would have a qualitative, but no quantitative,

impact on its overall product portfolio.

ECF No. 274 ¶ 97; ECF No. 277 ¶ 97. GSK stated that

there were no other reasons that GSK was not on the

market with a mumps-containing vaccine. ECF No. 274

¶ 98; ECF No. 277 ¶ 98. GSK also testified that it was

not aware of any statement on Merck’s product labels

for MMR-II or ProQuad that foreclosed GSK from

commercializing the mumps vaccine in the United

States. ECF No. 274 ¶¶ 100–101; ECF No. 277 ¶¶ 100–

101. However, GSK testified that the entire clinical

development plan for Priorix was based on “mirroring”

Merck’s label claims. ECF No. 295-1 ¶ 131; ECF No. 301

¶ 131.

-60aIn September 2019, a GSK executive told investors

that it had completed the Phase III studies and it was

“programming now the next step . . . submission of that

asset to the regulators.” ECF No. 295-1 ¶ 154; ECF No.

301 ¶ 154. Public approval documents from the FDA

reveal that the FDA approved GSK’s mumps vaccine

Priorix in June 2022. FDA, June 3, 2022 Approval Letter

– PRIORIX, https://www.fda.gov/media/158962/download

(last visited July 25, 2023).

II. PROCEDURAL HISTORY

On June 25, 2012, Chatom Primary Care, P.C., filed a

class action complaint against Merck based on the

allegations of fraud alleged in the qui tam action, U.S. ex

rel. Krahling v. Merck & Co., Inc., 10-cv-4374 (E.D. Pa.).

On July 9, 2012, Dr. Andrew Klein filed a class action

complaint against Merck also based on the allegations in

the qui tam action. On August 2, 2012, this Court

consolidated Chatom Primary Care, P.C. v. Merck & Co.,

Inc., No. 2:12-cv-03555 and Dr. Andrew Klein and Merck

& Co., Inc., No. 2:12-cv-03857. ECF No. 23. Thereafter, on

September 20, 2012, Plaintiffs, Chatom Primary Care,

P.C., Andrew Klein, M.D., and John I. Sutter, M.D., filed

a Consolidated Amended Class Action Complaint. ECF

No. 26. The Consolidated Amended Class Action

Complaint set forth six claims for relief: (1)

Monopolization in Violation of Section 2 of the Sherman

Act, 15 U.S.C. § 2; (2) Violation of State Consumer

Protection Laws; (3) breach of contract; (4) violation of

Pennsylvania’s Express Warranty Law, Pa. Stat. Ann. Tit.

13, § 2313; (5) violation of Pennsylvania’s Implied

Warranty Law, Pa. Stat. Ann. Tit. 13, § 2314; and (6)

unjust enrichment. Id.

-61aOn November 19, 2012, Merck filed a Motion to

Dismiss Plaintiffs’ Amended Complaint. ECF No. 40. On

September 4, 2014, the Court granted in part and denied

in part Merck’s Motion to Dismiss. ECF Nos. 63, 65. The

Court denied the motion to dismiss the antitrust claim,

granted the motion to dismiss the state law claims, except

those claims brought under the New York Deceptive Acts

and Practices Act (“NYDAPA”) and the New Jersey

Consumer Fraud Act (“NJCFA”), and granted the motion

to dismiss Count III, Count IV, Count V, and Count VI in

their entireties. United States ex rel. Krahling v. Merck &

Co., Inc., 44 F. Supp. 3d 581, 558– 59,609–610 (2014).

Years of discovery practice and accompanying motion

practice followed until January 10, 2020, when Merck filed

a Motion for Summary Judgment. ECF No. 272. Plaintiffs

filed an Opposition on February 10, 2020 (ECF No. 279)

and filed a corrected Opposition on February 20, 2020

(ECF No. 295). On March 10, 2020, Merck filed a Reply in

Support of its Summary Judgment Motion (ECF No. 302),

and Plaintiffs filed a Sur-Reply on March 17, 2020 (ECF

No. 312).

Additionally, on March 12, 2020, Merck filed a Motion

to Exclude Evidence from Dr. Thomas L. Copmann

Pursuant to Federal Rule of Evidence 702 and Daubert.

ECF No. 305. That Motion has also been fully briefed. See

ECF Nos. 319 (Plaintiffs’ Opposition); 323 (Merck’s

Reply); 324 (Plaintiffs’ Sur-Reply).

On December 5, 2022, this case was reassigned from

the Honorable C. Darnell Jones, II to the Honorable Chad

F. Kenney. ECF No. 340. This Court heard oral argument

on Defendant’s Motion for Summary Judgment on

January 24, 2023. ECF No. 342.

-62aIII. MERCK’S MOTION FOR SUMMARY

JUDGMENT

A. Legal Standard

A district court “shall grant summary judgment if the

movant shows that there is no genuine dispute as to any

material fact and the movant is entitled to judgment as a

matter of law.” Fed. R. Civ. P. 56(a). Indeed, “[s]ummary

judgment is appropriate when ‘the pleadings, depositions,

answers to interrogatories, and admissions on file,

together with the affidavits, if any, show that there is no

genuine issue as to any material fact and that the moving

party is entitled to a judgment as a matter of law.’” Wright

v. Owens Corning, 679 F.3d 101, 105 (3d Cir. 2012)

(quoting Orsatti v. New Jersey State Police, 71 F.3d 480,

482 (3d Cir. 1995)). A fact is “material” if it “might affect

the outcome of the suit under the governing law.”

Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248 (1986).

There is a genuine issue of material fact if “the evidence is

such that a reasonable jury could return a verdict for the

nonmoving party.” Id.

The party moving for summary judgment has the

initial burden “of informing the district court of the basis

for its motion, and identifying those portions of the

pleadings, depositions, answers to interrogatories, and

admissions on file, together with the affidavits, if any,

which it believes demonstrate the absence of a genuine

issue of material fact.” Celotex Corp. v. Catrett, 477 U.S.

317, 323 (1986) (internal quotation marks omitted). Once

the moving party has met this burden, the non-moving

party must counter with “specific facts showing that there

is a genuine issue for trial.” Matsushita Elec. Indus. Co. v.

Zenith Radio Corp., 475 U.S. 574, 587 (1986) (internal

-63aquotation marks and citation omitted); see also Fed. R.

Civ. P. 56(c).

The non-movant must show more than the “mere

existence of a scintilla of evidence” for elements on which

the non-movant bears the burden of production.

Anderson, 477 U.S. at 252. The non-movant opposing a

motion for summary judgment may not “rely merely upon

bare assertions, conclusory allegations or suspicions.”

Fireman’s Ins. Co. v. DuFresne, 676 F.2d 965, 969 (3d Cir.

1982). Additionally, the non-moving party “cannot rely on

unsupported allegations, but must go beyond pleadings

and provide some evidence that would show that there

exists a genuine issue for trial.” Jones v. United Parcel

Serv., 214 F.3d 402, 407 (3d Cir. 2000). Moreover,

arguments made in briefs “are not evidence and cannot by

themselves create a factual dispute sufficient to defeat a

summary judgment motion.” Jersey Cent. Power & Light

Co. v. Lacey Twp., 772 F.2d 1103, 1109–10 (3d Cir. 1985).

When determining the existence of a genuine issue of

material fact, a court must “examine the evidence of

record in the light most favorable to the party opposing

summary judgment, and resolve all reasonable inferences

in that party’s favor.” Wishkin v. Potter, 476 F.3d 180, 184

(3d Cir. 2007). The court need only decide whether “a fairminded jury could return a verdict for the plaintiff on the

evidence presented.” Anderson, 477 U.S. at 252. “Where

the record taken as a whole could not lead a rational trier

of fact to find for the non-moving party, there is no

‘genuine issue for trial’” and the court should grant

summary judgment in favor of the moving party.

Matsushita Elec. Indus. Co., 475 U.S. at 587 (citation

omitted).

-64aB. Discussion

1. Antitrust Claim

Merck argues that it is entitled to summary judgment

on Plaintiffs’ antitrust claim for the following reasons.

First, it argues that Plaintiffs’ Section 2 Sherman Act

claim is foreclosed by the Noerr-Pennington doctrine.

Second, it argues that to the extent Plaintiffs base their

Section 2 claim on any of Merck’s public statements about

its mumps-containing vaccines, those statements are not

actionable. Third, it argues that Plaintiffs cannot prove

causal antitrust injury. Lastly, it argues that Plaintiff Dr.

John I. Sutter is not a direct purchaser and therefore lacks

antitrust standing to bring a Sherman Act claim. The

Court will address each argument in turn.

a) Noerr-Pennington Doctrine

“Under the Noerr-Pennington doctrine, ‘[t]hose who

petition [the] government for redress are generally

immune from antitrust liability.’” Fed. Trade Comm’n v.

AbbVie Inc., 976 F.3d 327, 359–60 (3d Cir. 2020) (quoting

Prof’l Real Estate Inv’rs., Inc. v. Columbia Pictures

Indus., Inc. (“PRE”), 508 U.S. 49, 56 (1993)). The doctrine

applies to petitioning before “all departments of the

Government,” including the Executive Branch and its

agencies, like the FDA. A.D. Bedell Wholesale Co. v.

Philip Morris Inc., 263 F.3d 239, 250 (3d Cir. 2001)

(quoting Cal. Motor Transp. Co. v. Trucking Unlimited,

404 U.S. 508, 510 (1979)); see also In re Lipitor Antitrust

Litig., 868 F.3d 231, 273 (3d Cir. 2017) (“Petitions to

administrative agencies are consequently also immune

from antitrust liability.”). Nonetheless, this doctrine is not

absolute; rather, the “scope of Noerr Pennington

immunity depends on the ‘source, context, and nature of

the competitive restraint at issue.’” A.D. Bedell, 263 F.3d

-65aat 251 (quoting Allied Tube & Conduit Corp. v. Indian

Head, Inc., 486 U.S. 492 (1988)). “On the one hand, parties

may be immune from liability for ‘the antitrust injuries

which result from the [government] petitioning itself’ or

‘the antitrust injuries caused by government action which

results from the petitioning.’” In re Lipitor Antitrust

Litig., 868 F.3d at 264 (quoting A.D. Bedell, 263 F.3d at

251). “On the other hand, ‘[i]f the restraint directly results

from private action there is no immunity.’” Id. (quoting

A.D. Bedell, 263 F.3d at 251). This means that “immunity

will not categorically apply to private actions somehow

involving government action.” Id. “Immunity applies to

‘political activity with a commercial impact’ but not

‘commercial activity with a political impact.’” In re

Suboxone (Buprenorphine Hydrochloride & Naloxone)

Antitrust Litig., 622 F. Supp. 3d 22, 76 (E.D. Pa. 2022)

(quoting Ticor Title Ins. Co. v. FTC, 998 F.2d 1129, 1138

(3d Cir. 1993)).

Courts have found Noerr-Pennington to not apply

when the petitioning is a request to the government to

perform “a ministerial act” or the petitioning is a “mere

incident of regulation.” See, e.g., In re Buspirone Pat.

Litig., 185 F. Supp. 2d 363, 370 (S.D.N.Y. 2002); Litton

Sys., Inc. v. AT&T Co., 700 F.3d 785 (2d Cir. 1983)

(holding AT&T’s submission of its tariff rates to FCC for

publication—that FCC did not need to review or approve

prior to publication—did not warrant Noerr-Pennington

immunity because decision to impose and maintain the

interface tariff was made in the AT&T boardroom, not at

the FCC). Therefore, “it is critical to distinguish between

activities in which the government acts or renders a

decision only after an independent review of the merits of

a petition and activities in which the government acts in a

merely ministerial or nondiscretionary capacity in direct

-66areliance on the representations made by private parties.”

In re Buspirone, 185 F. Supp. 2d at 369. An example of a

ministerial act is the listing of a patent with the FDA for

publication in the Orange Book, which courts have

repeatedly found is not petitioning activity eligible for

Noerr-Pennington immunity as the FDA did not

independently confirm that the patent listing was correct.

Id. at 370; see also American Bioscience, Inc. v.

Thompson, 269 F.3d 1077, 1084 (D.C. Cir. 2001) (FDA

administers Orange Book listings in ministerial fashion).

Additionally, there is an exception to NoerrPennington immunity for “sham petitions.” Under this

exception, a “party is not entitled to immunity where the

activity ‘ostensibly directed toward influencing

governmental action [ ] is a mere sham to cover . . . an

attempt to interfere directly with the business

relationships of a competitor . . . .’” In re Flonase

Antitrust Litig., 795 F. Supp. 2d 300, 309 (E.D. Pa. 2011)

(“Flonase I”) (quoting Eastern R.R. Presidents

Conference v. Noerr Motor Freight, Inc., 365 U.S. 127, 144

(1965)). A two-step test has been established to determine

whether petitioning is a sham. PRE, 508 U.S. at 60–61.

Courts consider government petitioning a sham if: (1) it is

“objectively baseless in the sense that no reasonable

[party] could realistically expect success on the merits”

and (2) it is “an attempt to interfere directly with the

business relationships of a competitor, through the use of

the governmental process—as opposed to the outcome of

that process—as an anticompetitive weapon.” Id. (internal

quotation marks and citations omitted). And while the

Third Circuit has expressly declined to recognize a

“fraudulent misrepresentation” exception to NoerrPennington immunity, it has explained that “a material

misrepresentation that affects the very core of a litigant’s

-67acase” is relevant to the objectively baseless prong of the

sham exception. Cheminor Drugs, Ltd. V. Ethyl Corp., 168

F.3d 119, 123 (3d Cir. 1999).

In cases involving the pharmaceutical industry,

application of the two-part test has often been invoked in

the context of determining whether manufacturers’ use of

citizens petitions to the FDA are a sham and whether

bringing patent litigation to invoke the 30-month stay

under the Hatch-Waxman framework is a sham. See, e.g.,

In re DDAVP Direct Purchaser Antitrust Litig., 585 F.3d

677, 694 (2d Cir. 2009) (applying PRE to a citizen petition

filed with FDA and patent litigation and finding sham

exception adequately pled); AstraZeneca AB v. Mylan

Labs. Inc., No. 00–cv–6749, 2010 WL 2079722, at *3

(S.D.N.Y. May 19, 2010) (applying PRE to patent

infringement litigation and granting motion to dismiss as

the activity was not a sham and thus immunized by NoerrPennington); Flonase I, 795 F. Supp. 2d 300 (E.D. Pa.

2011) (denying Noerr-Pennington immunity under the

sham exception when defendant filed citizens petitions).

While administrative petitions are “less susceptible than

lawsuits to the sham exception, [they] still carry the

potential for antitrust liability.” In re DDAVP, 585 F.3d at

686; see also Flonase I, 795 F. Supp. 2d at 309–10

(“Although PRE only discussed the sham exception in the

context of litigation, the test also generally applies to

petitions to administrative agencies.”).

Additionally, “[i]t is well settled that First Amendment

rights are not immunized from regulation when they are

used as an integral part of conduct which violates a valid

statute.” Calif. Motor Transport Co. v. Trucking

Unlimited, 404 U.S. 508, 514 (1972). “Where certain

conduct is immunized from antitrust liability, a court must

-68astill ‘consider evidence of the remaining challenged

conduct in the aggregate to see if it is sufficient to support

antitrust liability.’” In re Suboxone, 622 F. Supp. 3d at 77

(quoting Mercatus Grp., LLC v. Lake Forest Hosp., 641

F.3d 834, 839 (7th Cir. 2011)).

Here, Merck asserts Noerr-Pennington immunity

applies because, even if Merck submitted fraudulent

information to the government, Plaintiffs’ alleged injuries

are caused by government action, i.e., the standard the

FDA required GSK to meet in designing clinical testing

for its mumps vaccine. ECF No. 273 at 25. Plaintiffs argue

that Merck’s conduct is not petitioning activity; rather, it

was a commercial decision to market its mumps vaccines

with a false and misleading label and that Merck’s

response to FDA enforcement is a mere incident of

regulation. See ECF No. 295 at 66–69. Merck replies by

stating that it “has never argued that statements made to

the public were immunized” by Noerr-Pennington, just

that the submissions to the FDA allegedly containing false

information that Plaintiffs’ claim resulted in the agency

holding GSK to a higher standard are immune. ECF No.

302 at 10–11.

The Court agrees that Merck’s submission to the FDA

could be considered petitioning activity. Additionally, the

submissions at issue are not requests to the government

to perform “a ministerial act” nor is the petitioning a

“mere incident of regulation.” As described above, the key

consideration for this exception is whether the

government acts in a merely ministerial or

nondiscretionary capacity in direct reliance on the

representations made by private parties’ acts or if the

government renders a decision only after an independent

review of the merits of a petition. Considering the

-69asubmissions to the FDA described in the parties’

briefing—submission of Protocol 007 data, a white paper

that Merck submitted to the FDA, a response to an FDA

Form 483, a response to an FDA Warning Letter, and

certain BPDRs—in all of these instances, the FDA is not

acting in a merely ministerial or non-discretionary

capacity based on the representations made by Merck.

Instead, the FDA is independently reviewing the merits

of each of the submissions. One does not have to look

beyond the back-and-forth between the FDA and Merck

to see that the FDA was actively reviewing Merck’s

submissions and exercising its discretion.

Turning to the sham exception, the Court must first

examine whether the submissions to the FDA had an

objective basis. However, “[t]he question of whether a

petition is a sham is generally a question of fact for the

jury” and “[a] court should only rule on the objective

baselessness prong as a matter of law [w]here there is no

dispute over the predicate facts of the underlying

petitions.” Flonase I, 795 F. Supp. 2d at 310 (internal

quotations and citations omitted). Accordingly, the Court

declines to grant summary judgment in favor of Merck on

Noerr-Pennington grounds because genuine issues of

material fact remain. Merck did not describe the

petitioning at issue in its Statement of Undisputed Facts

in Support of its Motion for Summary Judgment (ECF

No. 274), but rather, just cited to the Plaintiffs’ general

allegations in the Amended Complaint. Additionally, in its

response to the paragraphs in Plaintiffs’ Additional

Disputed Facts in Opposition to Summary Judgment that

described the facts surrounding the submissions to the

FDA, Merck stated: “The statements in this paragraph

are not material to the issues in Merck’s Motion for

Summary Judgment because they do not bear on whether

-70aPlaintiffs’ claims are barred by the Noerr-Pennington

doctrine, whether Merck’s conduct caused antitrust injury

to Plaintiffs, or any other basis upon which Merck moved

for summary judgment. Merck reserves the right to

dispute the statements in this paragraph at any trial in

this action.” See, e.g., ECF No. 301, Response to ¶ 48.

Because of this response, there remain disputes as to the

predicate facts of the underlying petitions at issue.

Finally, the Court notes that even if Merck’s

petitioning conduct is immune under Noerr-Pennington,

Plaintiffs allege that the anticompetitive business regime

centered on Merck’s false and misleading label claims, and

as such, the petitioning may be relevant to showing

Merck’s intent.

For the foregoing reasons, this Court declines to grant

summary judgment in favor of Merck on the grounds that

the Noerr-Pennington doctrine bars Plaintiffs’ antitrust

claim

b) Public Statements

In addition to arguing that its statements to the FDA

are immune from antitrust liability, Merck also argues

that to the extent Plaintiffs base their antitrust claim on

purported misstatements to the public at large, that

theory fails under the Sherman Act. Specifically, Merck

asserts that even if its statements about its own MMR

product to potential customers “may have been wrong,

misleading, or debatable,” such statements are not

actionable as antitrust violations in the absence of

coercion, and additionally, because a truthful disclosure

would not have made a difference in the competitive

process. ECF No. 273 at 42–43. In support of this

argument, Merck relies on four cases that this Court finds

distinguishable from the present case. ECF No. 273 at 42–

-71a43 (citing Santana Prods., Inc. v. Bobrick Washroom

Equip., Inc., 401 F.3d 123, 133 (3d Cir. 2005); Stearns

Airport Equip. Co. v. FMC Corp., 170 F.3d 518, 524–25

(5th Cir. 1999); Rambus v. FTC, 522 F.3d 456, 466 (D.C.

Cir. 2008); Eisai Inc. v. Sanofi-Aventis U.S., No. 08-4168,

2014 WL 1343254 (E.D. Pa. Mar. 28, 2014)).

First, Santana held that wrong, misleading, or

debatable statements by one competitor about another

competitor’s products are indicative of competition on the

merits and therefore do not constitute a “restraint of

trade” for purposes of an antitrust violation. 401 F.3d at

132. Putting aside the fact that the Third Circuit has

acknowledged that the Santana holding was phrased in

“overly broad terms,” West Penn Allegheny Health Sys.,

Inc. v. UPMC, 627 F.3d 85, 109 n.14 (3d Cir. 2010),

Santana is distinguishable on the facts as it involved

statements about a competitors’ product; whereas here,

Plaintiffs’ claims focus on the allegedly fraudulent

statements Merck made about its own product. Second,

Stearns is also factually distinct from this case as it

concerned competitors bidding on contracts to provide

airline boarding bridges to municipal airports. 170 F.3d at

524. Stearns explained that there could be no exclusionary

conduct as long as the decision on the choice of supplier

remained “in the hands of the consumer,” but the court

also noted that “bribery and threats are not competition

on the merits” and that “[s]everal cases have found

violations of section 2 when the monopolist engages in

what appears to be normal competitive behavior, but has

manipulated representatives of the consumer to the point

that the integrity of the decisional process has been

violated.” Id. at 526. Here, Plaintiffs did not have a choice

of supplier, and therefore, this case does not directly

support Merck’s argument. Third, in Rambus, the court

-72adetermined that the alleged deception did not harm the

competitive process. 522 F.3d at 466. In contrast, as will

be described infra, there is a dispute of material fact as to

whether Merck’s allegedly false and misleading label

claims were a material cause of GSK’s delayed market

entry. Lastly, Merck points to Eisai for the proposition

that “[w]hile it is theoretically possible that false

statements about a rival to potential investors and

customers can be a form of anticompetitive conduct, it

would be a rare case in which such false statements inand-of themselves would be sufficient to support an

antitrust violation.” 2014 WL 1343254, *37 (internal

quotations and citation omitted). However, as the Court is

unaware of any public statements Merck made about

GSK’s vaccine, the Court does not see how Eisai is

applicable to this case.

In conclusion, there are disputes as to material fact as

to whether Merck’s alleged deception impaired the

competitive process, and therefore, the Court declines to

grant summary judgment to Merck on the aspects of

Plaintiffs’ antitrust claim based on Merck’s statements to

the public.

c) Antitrust Injury

In antitrust actions, plaintiffs are required to

“establish antitrust standing, which is distinct from

Article III standing.” In re Wellbutrin XL Antitrust

Litig., 868 F.3d 132, 163 (3d Cir. 2017). “To establish

antitrust standing, [] plaintiff[s] must show they have

suffered an antitrust injury— that is, an ‘injury of the type

the antitrust laws were intended to prevent and that flows

from that which makes [the] defendant[‘s] acts unlawful.’”

Id. (quoting Ethypharm S.A. France v. Abbott

Laboratories, 707 F.3d 223, 233 (3d Cir. 2013)). Thus,

-73aplaintiffs must show that a defendant’s antitrust violation

was a “material cause” of their injuries. In re Flonase

Antitrust Litig., 798 F. Supp. 2d 619, 627 (E.D. Pa. 2011)

(“Flonase II”) (citations omitted). “An antitrust violation

is a ‘material cause’ of an injury if it is a proximate cause

of that injury.” Id. (citations omitted).

“That a regulatory or legislative bar can break the

chain of causation in an antitrust case is beyond fair

dispute.” In re Wellbutrin XL Antitrust Litig., 868 F.3d

at 165. However, “an antitrust violation can be the

proximate cause of a plaintiff’s injury even if there are

additional independent causes of the injury.” In re

Suboxone, 622 F. Supp. 3d at 78 (citations omitted).

Moreover, “[e]ven if an antitrust violation is not the

material cause of an injury and the only material cause is

some intervening conduct, courts have consistently found

the causation requirement satisfied and the chain of

causation intact where that intervening conduct was the

foreseeable consequence of the original antitrust

violation.” Flonase II, 798 F. Supp. 2d at 628. Ultimately,

“[w]hether conduct constitutes intervening conduct that

breaks the chain of causation and whether intervening

conduct is a foreseeable consequence of a defendant’s

actions are questions of fact to be submitted to the jury.”

Id. (citation omitted).

In order to establish antitrust injury here, Plaintiffs

must show that the harm they say they experienced—

inflated prices for mumps vaccines—was caused by

Merck’s allegedly unlawful conduct. Plaintiffs allege that

they have created a triable issue of fact as to whether

Merck’s conduct materially caused their harm because

they have put forth evidence that: (1) Merck kept GSK off

the market by maintaining false and misleading

-74astatements on the mumps vaccine labels; and (2) Merck

kept GSK off the market by failing to disclose potency

failures, staving off a massive recall. ECF No. 295 at 52–

55. Merck on the other hand argues: (1) GSK’s

independent business decisions, not Merck’s conduct,

delayed GSK’s development of Priorix; and (2) Plaintiffs’

claims that FDA would have “lowered the bar” absent

Merck’s conduct is pure speculation that does not forge

the necessary causal link. ECF No. 273 at 26–34.

The Court finds that there is sufficient evidence to

raise a genuine issue of material fact as to whether it was

Merck’s conduct that was a material cause of Plaintiffs’

injuries. Numerous pieces of evidence submitted with the

briefings establish this dispute and the Court will point to

a few herein. First, there is evidence that GSK had

protracted discussions with the FDA on the serological

acceptability criteria for mumps and it was only after

Merck licensed their mumps ELISA (the test that

Plaintiffs alleged was scientifically flawed) to PPD, and

GSK was able to use Merck’s ELISA, that GSK was

finally able to complete its Phase III clinical trials and

enter the market. See, e.g., Jan. 24, 2023 Hr’g Tr. at 19:18–

20:1. There is additional evidence contained in Merck’s

internal documents stating that they were out of

compliance, but changing their label was unacceptable

because it would allow GSK to enter the market.

Moreover, after GSK got access to Merck’s ELISA and

the approval to use Merck’s ELISA in 2012, GSK received

approval in 2022, which fits within the exact time frame,

Plaintiffs’ expert, Dr. Copmann, predicted GSK would

receive approval once it received access to Merck’s

allegedly flawed ELISA. See Id. at 20:18–20. Additionally,

the fact that GSK’s corporate designee testified as to

different reasons for GSK not obtaining approval until

-75a2022 does not, at summary judgment, break the causal

connection between the alleged antitrust violation and

Plaintiffs’ injury, as the corporate designee also testified

that GSK had to mirror Merck’s allegedly false label

claims. Moreover, the actions taken by the FDA and GSK

in response to Merck’s allegedly false label claims are

foreseeable consequences of Merck’s alleged misconduct.

Therefore, while a jury may well conclude that GSK’s

independent business reasons and the FDA decisionmaking process break the chain of causation, whether

these reasons are the proximate cause of Plaintiffs’ injury

is a question of fact for the jury. Accordingly, the Court

finds genuine issues of material fact remain as to the

question of whether Merck caused Plaintiffs’ alleged

injury.

d) Antitrust Standing

To have standing to sue for damages under the

antitrust laws, a private plaintiff must be a direct

purchaser of the product from the defendant. 15 U.S.C. §

4; Ill. Brick Co. v. Illinois, 431 U.S. 720, 746 (1977);

Warren Gen. Hosp. v. Amgen Inc., 643 F.3d 77, 79 (3d Cir.

2011). Merck argues that Dr. Sutter does not have

antitrust standing because although his practice, “John

Ivan Sutter, MD, PA”—which is a distinct corporate

entity and not a named plaintiff—made purchases of

Merck’s mumps vaccine, Dr. Sutter did not personally

make those purchases. ECF No. 273 at 44. Dr. Sutter’s

deposition testimony and his records showing payment

make it clear that it was his corporate entity, not him

personally, that purchased the mumps vaccines from

Merck. ECF No. 274 at 42; ECF No. 302 at 27. In

response, Plaintiffs point to Merck’s own sales data that

does not reveal a customer named “John Ivan Sutter, MD,

-76aPA.;” rather, the sales data contained customers “John

Ivan Sutter, MD” and “John Sutter,” both in Clifton, New

Jersey, that purchased $36,530 worth of MMRII and

ProQuad between 1998 and 2007. ECF No. 277 ¶ 42. In

reply, Merck argues that Plaintiffs’ contention that

because the sales data does not include the word “PA” to

signify the corporate entity, it is referring to Dr. Sutter in

his individual capacity, cannot defeat summary judgment

because it is pure speculation. ECF No. 302 at 27–28

(citing, inter alia, Robertson v. Allied Signal, Inc., 914

F.2d 360, 382 n.12 (3d Cir. 1990) (“speculation or

conjecture does not create a material factual dispute

sufficient to defeat entry of summary judgment”)). While

this Court agrees that Plaintiffs’ argument that Dr. Sutter

personally purchased the mumps vaccines seems

speculative in the face of Dr. Sutter’s own testimony and

his documented evidence, the Court finds this to be an

issue of fact, that it cannot resolve at summary judgment.

2. State Law Claims

Merck argues that it is entitled to summary judgment

on Plaintiffs’ New Jersey and New York consumer

protection claims. Merck argues that Dr. Sutter’s New

Jersey consumer protection claim fails “because, by his

own admission, the mumps vaccine is not sold to the public

at large and thus is not a product covered by the statute.”

ECF No. 273 at 12. Additionally, Merck argues Plaintiffs

failed to establish the essential element of causation for

their consumer protection claims. Id. For the following

reasons, the Court finds that Merck’s mumps vaccines

constitute merchandise under the NJCFA, but finds that

Plaintiffs have not created a genuine issue of material fact

that they would have acted any differently if Merck’s label

claims had said anything different.

-77aa) “Merchandise” under the NJCFA

The NJCFA prohibits sellers of “merchandise” from

engaging in any “unconscionable or abusive [commercial

practice], deception, fraud, false pretense, false promise,

misrepresentation, or the knowing, concealment,

suppression or omission of any material fact with intent

that others rely upon such concealment.” N.J. Stat. Ann.

§ 56:8-2. The NJCFA defines “merchandise” as “any

objects, wares, goods, commodities, services or anything

offered, directly or indirectly to the public for sale.” Id. §

56:8-1(c). New Jersey has interpreted “the public,” as

used in this definition of “merchandise,” to refer to the

“public at large.” Princeton Healthcare Sys. v. Netsmart

New York, Inc., 29 A.3d 361, 365 (N.J. App. Div. 2011)

(collecting cases). Notably, “it is the character of the

transaction rather than the identity of the purchaser

which determines if the Consumer Fraud Act is

applicable.” J & R Ice Cream Corp. v. California

Smoothie Licensing Corp., 31 F.3d 1259, 1273–74 (3d Cir.

1994) (citation omitted).

Accordingly, some courts have “dismissed NJCFA

claims relying on services or goods that are only offered

to a select group of individuals.” City of Atl. City v.

Zemurray St. Capital, LLC, 192 F. Supp. 3d 563, 568

(D.N.J. 2016) (citations omitted). On the other hand,

however, “at least one judge in [the district of New Jersey]

has determined that the NJCFA can encompass claims for

merchandise that is ‘expensive, uncommon, or only suited

to the needs of a limited clientele.’” Id. (citing Prescription

Counter v. AmerisourceBergen Corp., No. 04-5802, 2007

WL 3511301, at *14 (D.N.J. Nov. 14, 2007)). Courts have

summarized the distinction in this line of cases, stating

that “where courts permitted claims to go forward

-78aseemingly about goods not available to the general public,

those goods are generally standardized and did not

require individual bargaining”; “[b]ut where claims were

not permitted to proceed, those usually dealt with specific

agreements and individualized negotiations.” Id. (citing

Naporano Iron & Metal Co. v. Am. Crane Corp., 79 F.

Supp. 2d 494, 509 (D.N.J. 1999)).

Merck argues that Plaintiffs’ NJCFA claim fails

because the mumps vaccines were not available “to the

public at large,” therefore, the mumps vaccines do not

qualify as “merchandise” under the NJCFA. ECF No. 273

at 46–47. In support of this argument, Merck points to Dr.

Sutter’s deposition testimony stating that the mumps

vaccine is not available “to the public at large,” but rather,

the vaccine must be purchased by licensed medical

professionals. ECF No. 247 ¶ 43; ECF No. 277 ¶ 43.

However, looking at the character of the transaction

rather than the identity of the purchaser, the Court finds

that Merck’s mumps vaccines are standardized and not

the result of individual bargaining. As indicated by

Plaintiffs, Merck’s mumps vaccines are made under

standard formulas and conditions and are administered

uniformly to the general public. ECF No. 295 at 80. The

mumps vaccines are not customized to each patient, but

rather are sold in a uniform package and administered in

a uniform dose. Id. Additionally, Merck has not

demonstrated that the transaction was subject to

individualized negotiations.

Therefore, the Court finds that Merck’s mumps

vaccines are “merchandise” under the NJCFA and thus

will deny summary judgment on this ground.

b) Causation Elements of Plaintiffs’

State-Law Claims

-79aTo prove their claims under the NYDAPA and the

NJCFA, Plaintiffs must show causation. See Frederico v.

Home Depot, 507 F.3d 188, 202 (3d Cir. 2007) (explaining

that the NJFCA requires a causal link between the

practice and the harm); In re Currency Conversion Fee

Antitrust Litig., 230 F.R.D. 303, 310 (S.D.N.Y. 2004)

(explaining that the NYDAPA requires a plaintiff to prove

that the defendant’s material deceptive act caused the

injury). Under the NJCFA, “[c]ourts have generally found

causation to be established for [NJCFA] purposes when a

plaintiff has demonstrated a direct correlation between

the unlawful practice and the loss; they have rejected

proofs of causation that were speculative or attenuated.”

Heyert v. Taddese, 70 A.3d 680, 700 (N.J. App. Div. 2013);

see also Fleisher v. Fiber Composites, LLC, No. 12-cv1326, 2012 WL 5381381, at *10 (E.D. Pa. Nov. 2, 2012)

(explaining under the NJCFA, plaintiffs must articulate a

causal nexus between the defendant’s conduct and

plaintiffs’ ascertainable loss). “Under the [NYDAPA],

plaintiffs need not prove reliance, but at a minimum, the

complaint must allege that the plaintiffs saw the deceptive

statements prior to purchasing the defendant’s product,

and that the defendant’s deceptive act or practice caused

harm.” Fleisher, 2012 WL 5381381, at *10 (cleaned up)

(citations omitted).

Here, Plaintiffs allege in their Complaint that as “a

direct

and

proximate

result

of

Merck’s

misrepresentations and omissions, the Plaintiffs . . . were

damaged” and Plaintiffs “would not have purchased or

used Mumps Vaccine had they known the truth.” ECF No.

26 ¶¶ 167–168. But the undisputed evidence shows that

Plaintiffs would not have acted any differently if the labels

said anything different. Dr. Klein does not dispute that he

did not regularly review the package insert for Merck’s

-80aMMR-II vaccine, other than in the context of this case and

to check the dosing schedule. ECF No. 274 ¶ 33; ECF No.

277 ¶ 33. Similarly, Dr. Sutter never investigated whether

the statements in Merck’s label related to efficacy,

effectiveness, or seroconversion were false and misleading

prior to reviewing the Complaint in the related FCA

action. ECF No. 274 ¶ 44; ECF No. 277 ¶ 44. Accordingly,

Plaintiffs cannot establish the causal nexus required to

prove their state-law claims. See, e.g., Fleisher, 2012 WL

5381381, at *10 (dismissing NJCFA and NYDAPA claims

because “at the minimum” the plaintiff must have seen

“the deceptive statements prior to purchasing the

defendant’s product”); Gale v. Int’l Bus. Mach. Corp., 9

A.D.3d 446, 447 (N.Y. 2d Dep’t 2004) (“If the plaintiff did

not see any of these statements, they could not have been

the cause of his injury.”).

Plaintiffs argue that they had “no choice” but to buy

Merck’s product because there was no alternative.

However, this is beside the point, as Plaintiffs must prove

a causal nexus between the alleged false statement and

their decision to purchase, and here, Plaintiffs never

reviewed or evaluated the alleged misstatements in

connection with a purchase, making proof of a causal

nexus impossible.

Plaintiffs additionally argue that all that they need to

show is that they did not receive the benefit of the

bargain—i.e., they bought a product that was ultimately

worth less than the product that was promised. ECF No.

295 at 77–78. However, the cases Plaintiffs rely on in

support of this argument are inapposite. Smajlaj v.

Campbell Soup Co. found that a different element of the

plaintiff’s NJCFA claim, the ascertainable loss element,

was satisfied if the plaintiff did not receive the benefit of

-81athe bargain. 782 F. Supp. 2d 84, 97, 99 (D.N.J. 2011).

Additionally, Rodriquez v. It’s Just Lunch, Int’l was a

class certification decision which therefore has no bearing

on this motion. 300 F.R.D. 125, 147 (S.D.N.Y. 2014).

Accordingly, because Plaintiffs have not shown that

they would have acted any differently if the labels said

anything different, Merck is entitled to judgment as a

matter of law on Plaintiffs’ state-law claims.

3. Conclusion

For the foregoing reasons, Merck’s Motion for

Summary Judgment as to the antitrust claim will be

denied and Merck’s Motion for Summary Judgment as to

the NYDAPA and NJCFA claims will be granted.

IV. MERCK’S MOTION TO EXCLUDE EVIDENCE

FROM DR. COPMANN

A. Legal Standard

Federal Rule of Evidence 702 provides:

A witness who is qualified as an expert by

knowledge, skill, experience, training, or education

may testify in the form of an opinion or otherwise

if: (a) the expert’s scientific, technical, or other

specialized knowledge will help the trier of fact to

understand the evidence or to determine a fact in

issue; (b) the testimony is based on sufficient facts

or data; (c) the testimony is the product of reliable

principles and methods; and (d) the expert has

reliably applied the principles and methods to the

facts of the case.

Fed. R. EvId. 702. This Rule places district courts in the

role of the “gatekeeper,” requiring courts to “ensure that

any and all [expert] testimony . . . is not only relevant, but

-82areliable.” Kumho Tire Co., Ltd. v. Carmichael, 526 U.S.

137, 147 (1999) (quoting Daubert v. Merrell Dow Pharms.,

Inc., 509 U.S. 579, 589 (1993)) (internal quotations

omitted). Rule 702 has “a liberal policy of admissibility,”

Pineda v. Ford Motor Co., 520 F.3d 237, 243 (3d Cir. 2008)

(citation omitted), and accordingly, the “rejection of

expert testimony is the exception and not the rule.”

Dorman Prods. v. PACCER, Inc., 201 F. Supp. 3d 663, 689

(E.D. Pa. 2016) (quoting Fed. R. EvId. 702 Advisory

Committee Note). The Third Circuit has explained that to

survive a Daubert challenge, an expert must satisfy three

“restrictions on expert testimony: qualification, reliability,

and fit.” Schneider ex rel. Estate of Schneider v. Fried, 320

F.3d 396, 404 (3d Cir. 2003) (citations omitted). The party

offering the expert must prove each of these requirements

by a preponderance of the evidence. In re TMI Litig., 193

F.3d 613, 663 (3d Cir. 1999).

To qualify as an expert, Rule 702 requires the “expert

witness to have ‘specialized knowledge’ regarding the area

of testimony.” Betterbox Commc’ns Ltd. v. BB Techs.,

Inc., 300 F.3d 325, 327 (3d Cir. 2002). The Third Circuit

has instructed courts to interpret the qualification

requirement “‘liberally,’ recognizing that ‘a broad range of

knowledge, skills, and training qualify an expert as such.’”

Thomas v. CMI Terex Corp., No. 07-3597, 2009 WL

3068242, *5 (D.N.J. Sept. 21, 2009) (quoting In re Paoli

R.R. Yard PCB Litig., 35 F.3d 717, 741 (3d Cir. 1994)

(“Paoli II”)). “[I]t is an abuse of discretion to exclude

testimony simply because the trial court does not deem

the proposed expert to be the best qualified or because the

proposed expert does not have the specialization that the

court considers most appropriate.” Pineda, 520 F.3d at

244 (quoting Holbrook v. Lykes Bros. S.S. Co., 80 F.3d 777,

782 (3d Cir. 1996)).

-83aThe reliability requirement of Daubert “means that

the expert’s opinion must be based on the ‘methods and

procedures of science’ rather than on ‘subjective belief or

unsupported speculation’; the expert must have ‘good

grounds’ for his or her belief.” Paoli II, 35 F.3d at 742

(citation omitted). “The reliability requirement is not to be

applied ‘too strictly’ and is satisfied as long as the expert

has ‘good grounds’ for his or her opinion.” Apotex, Inc. v.

Cephalon, Inc., 321 F.R.D. 220, 228 (E.D. Pa. 2017)

(quoting Holbrook, 80 F.3d at 784). “[I]n making reliability

determinations, courts must err on the side of admission

rather than exclusion.” In re Paoli R.R. Yard PCB Litig.,

916 F.2d 829, 857 (3d Cir. 1990) (“Paoli I”).

Lastly, Rule 702 requires the expert testimony fit the

issues in the case. “Testimony ‘fits’ a case when it is

‘relevant for the purposes of the case and . . . assist[s] the

trier of fact.’” In re Flonase Antitrust Litig., 884 F. Supp.

2d 184, 190 (E.D. Pa. 2012) (“Flonase III”) (quoting

Schneider, 320 F.3d at 404). Finally, “[v]igorous crossexamination, presentation of contrary evidence, and

careful instruction on the burden of proof are the

traditional and appropriate means of attacking shaky but

admissible evidence.” Daubert, 509 U.S. at 596 (citing

Rock v. Arkansas, 483 U.S. 44, 61 (1987)).

B. Discussion

Plaintiffs proffer Dr. Thomas L. Copmann (“Dr.

Copmann”) to provide an expert opinion on the possible

effects of Merck’s conduct on GSK’s ability to obtain

regulatory approval of its own mumps vaccine, Priorix,

and to opine on when Priorix would have obtained

regulatory approval in the United States if not for Merck’s

actions. ECF No. 309 at 8. Merck’s Motion to Exclude

Evidence from Dr. Thomas L. Copmann Pursuant to

-84aFederal Rule of Evidence 702 and Daubert argues that:

(a) Dr. Copmann’s opinion about how the FDA would have

reacted to different disclosures by Merck is not

admissible; (b) Dr. Copmann’s opinions about how GSK

would have reacted to different disclosures by Merck are

not admissible; and (c) Dr. Copmann’s estimate that it

would take 8 to 10 years for GSK to secure FDA approval

for a vaccine is baseless and unreliable. ECF No. 306.

1. Dr. Copmann’s Qualifications

Dr. Copmann is qualified to offer expert testimony in

this case. Dr. Copmann holds a bachelor’s degree in

biochemistry, a master’s in endocrinology, and a doctorate

in physiology. Additionally, Dr. Copmann has thirty years

of experience helping to bring pharmaceutical products to

market and in such role, he has worked closely with the

FDA and CBER in handling NDAs, BLAs, and INDs for

dozens of drugs and biological products, many of which

involved noninferiority analyses and ELISA testing. Dr.

Copmann has authored dozens of comments to the FDA

and CBER and has met with the agencies hundreds of

times. Additionally, Dr. Copmann has written various

articles and comments about the development and

regulation of biological products. Moreover, Dr. Copmann

was nominated by a senior FDA official, Dr. Carolyn

Hardegree, to serve on the CDC’s Advisory Committee on

Immunization Practices (“ACIP”) as the liaison

representative for the Pharmaceutical Research and

Manufacturers

of

America

(“PhRMA”),

which

demonstrates the high regard FDA officials hold Dr.

Copmann’s experience and judgment.

Contrary to Merck’s assertion, the fact that Dr.

Copmann has not worked for the FDA does not disqualify

him. Experience at the FDA is not required to opine about

-85aFDA regulations. See Wolfe v. McNeil-PPC, Inc., 881 F.

Supp. 2d 650, 658–59 (E.D. Pa. 2012) (finding two experts

that did not work at the FDA qualified to testify about

FDA regulations); AstraZeneca LP v. Breath Ltd., 88 F.

Supp. 3d 326, 385 n.54 (D.N.J. 2015) (permitting testimony

of “regulatory lawyer who [] practiced before the FDA for

over 35 years, possess[ed] knowledge that [could] assist

the Court in understanding the manner in which the FDA

issues rules and regulations”). Moreover, the fact that Dr.

Copmann has never previously served as an expert, does

not undermine Dr. Copmann’s qualifications. See United

States v. Lee, 339 Fed. App’x 153, 159 (3d Cir. 2009)

(noting that the fact that it was an individual’s “first time

testimony as an expert does not undermine [his]

qualifications”).

Accordingly, the Court finds that Dr. Copmann

possesses specialized knowledge greater than the average

layman and he is therefore qualified to testify under the

Third Circuit’s liberal requirements for expert testimony.

2. Reliability and Fit of Dr. Copmann’s

Opinions

Merck first objects to Dr. Copmann’s opinion that if

Merck had revised its label, “[t]his would have likely

resulted in the FDA taking a more flexible approach in

reaching an agreement with GSK on an appropriate

serological assay to demonstrate how well Priorix

protected children from disease,” and would have allowed

GSK to demonstrate non-inferiority using tests it had

already developed and studies it had already conducted,

resulting in GSK launching Priorix sooner. ECF No. 306

at 11 (citing Dr. Copmann Report at ¶ 19). Merck argues

that this opinion is unreliable and untestable ipse dixit

and that it is unhelpful because Dr. Copmann cannot, and

-86adoes not, explain how likely the FDA would have been to

take the actions he posits. Id. at 12.

The Court finds this opinion is reliable as it is wellgrounded in Dr. Copmann’s experience and the record.

See, e.g., Center City Periodontist, P.C. v. Dentsply Int’l,

Inc., 321 F.R.D. 193, 202 (finding the “totality” of expert’s

knowledge and experience provides a reliable basis for

opining on the FDA’s regulatory and administrative

requirements but excluding the opinion because it did not

fit the facts of the case). Dr. Copmann considered over 600

documents produced in this matter; analyzed dozens of

studies and publications; and reviewed or attended

multiple depositions. Considering the intricacies of this

case, his opinion on the process by which the FDA would

review GSK’s application would be helpful to the trier of

fact.

Merck points to case law for the proposition that even

a qualified expert cannot testify to state of mind or beliefs.

ECF No. 306 at 13 (citing Wolfe, 881 F. Supp. at 660–62

(recognizing expert could not opine regarding the FDA’s

state of mind); Deutsch v. Novartis Pharms. Corp., 768 F.

Supp. 2d 420, 442 (E.D.N.Y. 2011) (noting “the opinions of

[expert] witnesses on the intent, motives, or states of

minds of corporations, regulatory agencies, and others

have no basis in any relevant body of knowledge or

expertise” (citation omitted))). However, the Court finds

that Dr. Copmann is not opining on the FDA’s state of

mind; rather his opinion is how the FDA would have likely

responded under the operative statutes and regulations to

disclosures Merck allegedly should have made, but did

not. See Flonase III, 907 F. Supp. 2d at 644 (finding

reliable expert report about how the FDA would have

responded to certain submissions). Accordingly, the Court

-87afinds that Dr. Copmann’s opinion regarding the FDA

likely taking a more flexible approach is admissible as it is

reliable and will assist the trier of fact.

The second opinion that Merck objects to is Dr.

Copmann’s opinion that if Merck revised its label and the

FDA had relaxed its standards for vaccine approval, GSK

would have launched its competing Priorix vaccine more

quickly. ECF No. 306 at 15. Again, Merck argues that this

opinion about what GSK would have done is untestable

and unreliable ipse dixit that conflicts with

uncontroverted testimony that Merck’s labels had no

effect on GSK’s development of Priorix and that the

opinion is unhelpful because Dr. Copmann cannot, and

does not, explain how likely GSK would have been to

launch Priorix any earlier. Id. at 15–16.

The Court finds this opinion reliable and that it fits the

facts of the case. As discussed supra in the discussion of

antitrust injury, the Court has found there is a dispute of

material fact as to whether the labels played a role in the

delay of Priorix coming to the market. While GSK’s

corporate designee did answer “no” when asked if Merck’s

labels stopped GSK from commercializing its mumps

vaccine, her testimony also indicated that GSK based its

development on what was publicly available on Merck’s

label. See ZF Meritor, LLC v. Eaton Corp., 696 F.3d 254,

290 (3d Cir. 2012) (affirming denial of defendant’s Daubert

motion as “amount[ing] to nothing more than a complaint

that [plaintiffs’ expert] did not adopt [defendant’s] view of

the case”). Accordingly, the Court finds this opinion

admissible as it is reliable and fits the facts of the case.

The last opinion that Merck objects to is Dr.

Copmann’s opinion that it would have taken GSK 8 to 10

years to obtain regulatory approval for Priorix once it

-88areached agreement on an appropriate endpoint for a

clinical study because Merck argues the opinion is

baseless and unreliable. ECF No. 306 at 19. Merck takes

issue with the fact that Dr. Copmann only reviewed four

Merck vaccines and four GSK vaccines for this opinion and

argues that such a review does not amount to a reliable

basis to make his conclusion. Additionally, Merck takes

issue with the fact that Dr. Copmann does not look at the

specifics of those vaccines to assess if they are relevant

comparators and his opinion does not take into account the

fact that only a small percentage of vaccine products are

actually approved by the FDA. Finally, Merck argues that

one third of the vaccines he examined took 12.75 years or

longer for approval and therefore his analysis is unreliable

as it contains no explanation as to why GSK would have

fallen within the low end of the range.

The Court finds this opinion reliable as estimating a

competitor’s entry date in the but-for world is a routine

and necessary aspect of antitrust cases. See, e.g., Apotex,

321 F.R.D. 220 (permitting expert to opine that if not for

a patent settlement, at least one of the first-filer generics

would have prevailed at summary judgment and entered

the market in 2006); In re Solodyn (Minocycline

Hydrochloride) Antitrust Litig., No. 14-md-02503, 2018

WL 563144 (D. Mass. Jan. 25, 2018) (permitting expert

testimony regarding but-for entry dates in antitrust

matter where opinion was based on “industry surveys and

[the parties] own representations”). Additionally,

according to Plaintiffs, Dr. Copmann, looked at every

clinical development start date and end date he could find

for each prophylactic vaccine licensed in the United States

to generate comparator vaccines and calculate his average

development timeline. See ECF No. 319 at 29. Moreover,

Dr. Copmann’s eight-to-ten-year estimate is reliable

-89abecause it accords with GSK’s own estimate. GSK began

its Phase III studies for Priorix in the United States in

2012 and launched in 2022. Because there is a rational

factual basis underlying Dr. Copmann’s estimate that it

would take 8 to 10 years for Priorix to come to the market,

the Court finds his opinion admissible. Additionally, the

Court finds it would be helpful to the trier of fact.

In sum, considering the fact that the Federal Rules of

Evidence illustrate a preference for admitting evidence

that might assist the trier of fact and this policy extends

to the admissibility of expert testimony, the Court finds

Dr. Copmann’s opinions admissible at this time. Cross

examination will be an appropriate means of challenging

this expert testimony. The Court will therefore deny

Merck’s Motion to Exclude Evidence from Dr. Thomas L.

Copmann (ECF No. 305).

V. CONCLUSION

For the reasons set forth above, Merck’s Motion for

Summary Judgment (ECF No. 272) is granted in part and

denied in part and Merck’s Motion to Exclude Evidence

from Dr. Thomas L. Copmann (ECF No. 305) is denied.

An appropriate Order will follow.

BY THE COURT:

/s/ Chad F. Kenney

CHAD F. KENNEY, JUDGE

-90aAppendix C

___________________

UNITED STATES COURT OF APPEALS

FOR THE THIRD CIRCUIT

No. 23-3089

IN RE: MERCK MUMPS VACCINE ANTITRUST

LITIGATION

MERCK & CO., INC.,

Appellant

(D.C. No. 2-12-cv-03555)

SUR PETITION FOR REHEARING

Present: CHAGARES, Chief Judge; HARDIMAN,

SHWARTZ, KRAUSE, BIBAS, PORTER, MATEY,

PHIPPS, FREEMAN, MONTGOMERY-REEVES, and

CHUNG, Circuit Judges

The petition for rehearing filed by Appellees in the

above-entitled case having been submitted to the judges

who participated in the decision of this Court and to all the

other available circuit judges of the circuit in regular

active service, and no judge who concurred in the decision

having asked for rehearing, and a majority of the judges

-91aof the circuit in regular service not having voted for

rehearing, the petition for rehearing by the panel and the

Court en banc, is denied. Judge Shwartz, Judge Krause,

and Judge Restrepo voted to grant the petition for

rehearing.

BY THE COURT,

s/Tamika R. Montgomery-Reeves

Circuit Judge

Dated: February 10, 2025

JK/cc: All Counsel of Record

This is a copy of a public record, reproduced as it was published. It is not legal advice, and it may not be the version a court would rely on. Check the official source before you cite it.

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