# 37 CFR § 42.8: Mandatory notices

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-37-42.8

## Section

- **Citation:** 37 CFR § 42.8
- **Heading:** Mandatory notices
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 37—Patents, Trademarks, and Copyrights > CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE > SUBCHAPTER A—GENERAL > PART 42—TRIAL PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD > Subpart A—Trial Practice and Procedure > General

## 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 CFR § 42.1 § 42.1 Policy.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.1.md)
- [37 CFR § 42.2 § 42.2 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.2.md)
- [37 CFR § 42.3 § 42.3 Jurisdiction.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.3.md)
- [37 CFR § 42.4 § 42.4 Notice of trial.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.4.md)
- [37 CFR § 42.5 § 42.5 Conduct of the proceeding.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.5.md)
- [37 CFR § 42.6 § 42.6 Filing of documents, including exhibits; service.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.6.md)
- [37 CFR § 42.7 § 42.7 Management of the record.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.7.md)
- [37 CFR § 42.8 § 42.8 Mandatory notices.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.8.md)
- [37 CFR § 42.9 § 42.9 Action by patent owner.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.9.md)
- [37 CFR § 42.10 § 42.10 Counsel.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.10.md)
- [37 CFR § 42.11 § 42.11 Duty of candor; signing papers; representations to the Board; sanctions.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.11.md)
- [37 CFR § 42.12 § 42.12 Sanctions.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.12.md)
- [37 CFR § 42.13 § 42.13 Citation of authority.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.13.md)
- [37 CFR § 42.14 § 42.14 Public availability.](https://www.frixlaw.com/law-library/statutes/ecfr-37-42.14.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-37-42.8. Check the current official text before relying on it. Not legal advice.