{"data":{"id":"us/37-cfr-41.9","jurisdiction":"us","citation":"37 CFR 41.9","heading":"Action by owner.","body":"(a) Entire interest. An owner of the entire interest in an application or patent involved in a Board proceeding may act in the proceeding to the exclusion of the inventor (see §§ 3.71 and 3.73 of this title).\n(b) Part interest. An owner of a part interest in an application or patent involved in a Board proceeding may petition to act in the proceeding to the exclusion of an inventor or a co-owner. The petition must show the inability or refusal of an inventor or co-owner to prosecute the proceeding or other cause why it is in the interest of justice to permit the owner of a part interest to act in the proceeding. An order granting the petition may set conditions on the actions of the parties during the proceeding.","path":["Title 37—Patents, Trademarks, and Copyrights","CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE","SUBCHAPTER A—GENERAL","PART 41—PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD","Subpart A—General Provisions"],"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":"8df6a4ce0293d0e377b05e8b7aad7a3b788b3d302b577c0e9b91a7515ddcb6f1","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-41.8","next":"us/37-cfr-41.10"},"notice":"GroundRules: Original legal text. Not legal advice."}