{"data":{"id":"us/37-cfr-2.191","jurisdiction":"us","citation":"37 CFR 2.191","heading":"Action of the Office based on the written record.","body":"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.","path":["Title 37—Patents, Trademarks, and Copyrights","CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE","SUBCHAPTER A—GENERAL","PART 2—RULES OF PRACTICE IN TRADEMARK CASES"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-37.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:45Z","sha256":"2c1576f42c24de82a2e3956839cbadbc0f22f7486e3d7800f6445645cc3cca98","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-2.190","next":"us/37-cfr-2.192"},"notice":"GroundRules: Original legal text. Not legal advice."}