{"data":{"id":"us/37-cfr-11.301","jurisdiction":"us","citation":"37 CFR 11.301","heading":"Meritorious claims and contentions.","body":"A practitioner shall not bring or defend a proceeding, or assert or controvert an issue therein, unless there is a basis in law and fact for doing so that is not frivolous, which includes a good-faith argument for an extension, modification or reversal of existing law.","path":["Title 37—Patents, Trademarks, and Copyrights","CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE","SUBCHAPTER A—GENERAL","PART 11—REPRESENTATION OF OTHERS BEFORE THE UNITED STATES PATENT AND TRADEMARK OFFICE","Subpart D—USPTO Rules of Professional Conduct"],"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":"57cae87552398b9e1f26a1acfa760cb1dddff03303315db128100a7ba2f71f9f","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-11.205-11.300","next":"us/37-cfr-11.302"},"notice":"GroundRules: Original legal text. Not legal advice."}