# 37 C.F.R. § 42.8 (2026): Mandatory notices

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_8

## Section

- **Citation:** 37 C.F.R. § 42.8 (2026)
- **Heading:** Mandatory notices
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 37 CFR: Patents, Trademarks, and Copyrights / Chapter I: UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE / Part 42: TRIAL PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD / Subpart A: Trial Practice and Procedure / § 42.8: § 42.8   Mandatory notices.

## Text

(a) Each notice listed in paragraph (b) of this section must be filed with the Board:
(1) By the petitioner, as part of the petition;
(2) By the patent owner, or applicant in the case of derivation, within 21 days of service of the petition; or
(3) By either party, within 21 days of a change of the information listed in paragraph (b) of this section stated in an earlier paper.
(b) Each of the following notices must be filed:
(1)
Real party-in-interest.
Identify each real party-in-interest for the party.
(2)
Related matters.
Identify any other judicial or administrative matter that would affect, or be affected by, a decision in the proceeding.
(3)
Lead and back-up counsel.
If the party is represented by counsel, then counsel must be identified.
(4)
Service information.
Identify (if applicable):
(i) An electronic mail address;
(ii) A postal mailing address;
(iii) A hand-delivery address, if different than the postal mailing address;
(iv) A telephone number; and
(v) A facsimile number.

## Nearby sections

- [37 C.F.R. § 42.1 (2026) § 42.1   Policy.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_1.md)
- [37 C.F.R. § 42.2 (2026) § 42.2   Definitions.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_2.md)
- [37 C.F.R. § 42.3 (2026) § 42.3   Jurisdiction.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_3.md)
- [37 C.F.R. § 42.4 (2026) § 42.4   Notice of trial.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_4.md)
- [37 C.F.R. § 42.5 (2026) § 42.5   Conduct of the proceeding.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_5.md)
- [37 C.F.R. § 42.6 (2026) § 42.6   Filing of documents, including exhibits; service.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_6.md)
- [37 C.F.R. § 42.7 (2026) § 42.7   Management of the record.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_7.md)
- [37 C.F.R. § 42.8 (2026) § 42.8   Mandatory notices.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_8.md)
- [37 C.F.R. § 42.9 (2026) § 42.9   Action by patent owner.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_9.md)
- [37 C.F.R. § 42.10 (2026) § 42.10   Counsel.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_10.md)
- [37 C.F.R. § 42.11 (2026) § 42.11   Duty of candor; signing papers; representations to the Board; sanctions.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_11.md)
- [37 C.F.R. § 42.12 (2026) § 42.12   Sanctions.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_12.md)
- [37 C.F.R. § 42.13 (2026) § 42.13   Citation of authority.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_13.md)
- [37 C.F.R. § 42.14 (2026) § 42.14   Public availability.](https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_14.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T37_P42_S42_8. Check the current official text before relying on it. Not legal advice.