{"data":{"id":"us/37-cfr-42.102","jurisdiction":"us","citation":"37 CFR 42.102","heading":"Time for filing.","body":"(a) A petition for inter partes review of a patent must be filed after the later of the following dates, where applicable:\n(1) If the patent is a patent described in section 3(n)(1) of the Leahy-Smith America Invents Act, the date that is nine months after the date of the grant of the patent;\n(2) If the patent is a patent that is not described in section 3(n)(1) of the Leahy-Smith American Invents Act, the date of the grant of the patent; or\n(3) If a post-grant review is instituted as set forth in subpart C of this part, the date of the termination of such post-grant review.\n(b) [Reserved]","path":["Title 37—Patents, Trademarks, and Copyrights","CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE","SUBCHAPTER A—GENERAL","PART 42—TRIAL PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD","Subpart B—Inter Partes Review"],"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":"969a2638838c1f98c3c9464fd12366ebab3df4224a6748747fc572ccd3aca9af","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-42.101","next":"us/37-cfr-42.103"},"notice":"GroundRules: Original legal text. Not legal advice."}