37 CFR § 41.101 - Notice of proceeding.

---
identifier: "/us/cfr/t37/s41.101"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "37 CFR § 41.101 - Notice of proceeding."
title_number: 37
title_name: "Patents, Trademarks, and Copyrights"
section_number: "41.101"
section_name: "Notice of proceeding."
chapter_name: "UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "41"
part_name: "PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "35 U.S.C. 2(b)(2), 3(a)(2)(A), 21, 23, 32, 41, 134, 135, and Public Law 112-29."
regulatory_source: "69 FR 50003, Aug. 12, 2004, unless otherwise noted."
cfr_part: "41"
---


# 41.101 Notice of proceeding.

(a) Notice of a contested case will be sent to every party to the proceeding. The entry of the notice initiates the proceeding.

(b) When the Board is unable to provide actual notice of a contested case on a party through the correspondence address of record for the party, the Board may authorize other modes of notice, including:

(1) Sending notice to another address associated with the party, or

(2) Publishing the notice in the *Official Gazette of the United States Patent and Trademark Office.*