37 CFR § 2.191 - Action of the Office based on the written record.
---identifier: "/us/cfr/t37/s2.191"source: "ecfr"legal_status: "authoritative_unofficial"title: "37 CFR § 2.191 - Action of the Office based on the written record."title_number: 37title_name: "Patents, Trademarks, and Copyrights"section_number: "2.191"section_name: "Action of the Office based on the written record."chapter_name: "UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE"subchapter_number: "A"subchapter_name: "GENERAL"part_number: "2"part_name: "RULES OF PRACTICE IN TRADEMARK CASES"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"authority: "15 U.S.C. 1113, 1123; 35 U.S.C. 2; sec. 10, Pub. L. 112-29, 125 Stat. 284; Pub. L. 116-260, 134 Stat. 1182, unless otherwise noted. Sec. 2.99 also issued under secs. 16, 17, 60 Stat. 434; 15 U.S.C. 1066, 1067."regulatory_source: "30 FR 13193, Oct. 16, 1965, unless otherwise noted."cfr_part: "2"---
Identifier
/us/cfr/t37/s2.191
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
United States Patent and Trademark Office, Department of Commerce
Authority
15 U.S.C. 1113, 1123; 35 U.S.C. 2; sec. 10, Pub. L. 112-29, 125 Stat. 284; Pub. L. 116-260, 134 Stat. 1182, unless otherwise noted. Sec. 2.99 also issued under secs. 16, 17, 60 Stat. 434; 15 U.S.C. 10... 15 U.S.C. 1113, 1123; 35 U.S.C. 2; sec. 10, Pub. L. 112-29, 125 Stat. 284; Pub. L. 116-260, 134 Stat. 1182, unless otherwise noted. Sec. 2.99 also issued under secs. 16, 17, 60 Stat. 434; 15 U.S.C. 1066, 1067.
# 2.191 Action of the Office based on the written record.All business with the Office must be transacted in writing. The action of the Office will be based exclusively on the written record. No consideration will be given to any alleged oral promise, stipulation, or understanding when there is disagreement or doubt.[84 FR 37096, July 31, 2019]