37 CFR § 41.122 - Oppositions and replies.

---
identifier: "/us/cfr/t37/s41.122"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "37 CFR § 41.122 - Oppositions and replies."
title_number: 37
title_name: "Patents, Trademarks, and Copyrights"
section_number: "41.122"
section_name: "Oppositions and replies."
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: "2026-04-05"
last_updated: "2026-04-05"
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"
---


# 41.122 Oppositions and replies.

(a) Oppositions and replies must comply with the content requirements for motions and must include a statement identifying material facts in dispute. Any material fact not specifically denied shall be considered admitted.

(b) All arguments for the relief requested in a motion must be made in the motion. A reply may only respond to arguments raised in the corresponding opposition.