{"data":{"id":"us/37-cfr-42.220","jurisdiction":"us","citation":"37 CFR 42.220","heading":"Patent owner response.","body":"(a) Scope. A patent owner may file a single response to the petition and/or decision on institution. A patent owner response is filed as an opposition and is subject to the page limits provided in § 42.24.\n(b) Due date for response. If no date for filing a patent owner response to a petition is provided in a Board order, the default date for filing a patent owner response is three months from the date the post-grant review is instituted.","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 C—Post-Grant 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":"92130954971c5ffd192801b7973577c458bac37e017f3d844f58934697511b93","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-42.208","next":"us/37-cfr-42.221"},"notice":"GroundRules: Original legal text. Not legal advice."}