---
kind: "unit"
title: "37"
title_heading: "Patents, Trademarks, and Copyrights"
key: "chI/subchA/part1/subpartH"
level: "subpart"
label: "Subpart H"
heading: "Inter Partes Reexamination of Patents That Issued From an Original Application Filed in the United States on or After November 29, 1999"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/37/chI-subchA-part1-subpartH"
sections_count: 41
---

# Subpart H — Inter Partes Reexamination of Patents That Issued From an Original Application Filed in the United States on or After November 29, 1999

Title 37 C.F.R. — Patents, Trademarks, and Copyrights › Chapter I — United States Patent and Trademark Office, Department of Commerce › Subchapter A — General › Part 1 — Rules of Practice in Patent Cases

## Sections

- [§1.902. Processing of prior art citations during an inter partes reexamination proceeding.](/cfr/37/1.902.md)
- [§1.903. Service of papers on parties in inter partes reexamination.](/cfr/37/1.903.md)
- [§1.904. Notice of inter partes reexamination in Official Gazette.](/cfr/37/1.904.md)
- [§1.905. Submission of papers by the public in inter partes reexamination.](/cfr/37/1.905.md)
- [§1.906. Scope of reexamination in inter partes reexamination proceeding.](/cfr/37/1.906.md)
- [§1.907. Inter partes reexamination prohibited.](/cfr/37/1.907.md)
- [§1.913. Persons eligible to file, and time for filing, a request for inter partes reexamination.](/cfr/37/1.913.md)
- [§1.915. Content of request for inter partes reexamination.](/cfr/37/1.915.md)
- [§1.919. Filing date of request for inter partes reexamination.](/cfr/37/1.919.md)
- [§1.923. Examiner's determination on the request for inter partes reexamination.](/cfr/37/1.923.md)
- [§1.925. Partial refund if request for inter partes reexamination is not ordered.](/cfr/37/1.925.md)
- [§1.927. Petition to review refusal to order inter partes reexamination.](/cfr/37/1.927.md)
- [§1.931. Order for inter partes reexamination.](/cfr/37/1.931.md)
- [§1.933. Patent owner duty of disclosure in inter partes reexamination proceedings.](/cfr/37/1.933.md)
- [§1.935. Initial Office action usually accompanies order for inter partes reexamination.](/cfr/37/1.935.md)
- [§1.937. Conduct of inter partes reexamination.](/cfr/37/1.937.md)
- [§1.939. Unauthorized papers in inter partes reexamination.](/cfr/37/1.939.md)
- [§1.941. Amendments by patent owner in inter partes reexamination.](/cfr/37/1.941.md)
- [§1.943. Requirements of responses, written comments, and briefs in inter partes reexamination.](/cfr/37/1.943.md)
- [§1.945. Response to Office action by patent owner in inter partes reexamination.](/cfr/37/1.945.md)
- [§1.947. Comments by third party requester to patent owner's response in inter partes reexamination.](/cfr/37/1.947.md)
- [§1.948. Limitations on submission of prior art by third party requester following the order for inter partes reexamination.](/cfr/37/1.948.md)
- [§1.949. Examiner's Office action closing prosecution in inter partes reexamination.](/cfr/37/1.949.md)
- [§1.951. Options after Office action closing prosecution in inter partes reexamination.](/cfr/37/1.951.md)
- [§1.953. Examiner's Right of Appeal Notice in inter partes reexamination.](/cfr/37/1.953.md)
- [§1.955. Interviews prohibited in inter partes reexamination proceedings.](/cfr/37/1.955.md)
- [§1.956. Patent owner extensions of time in inter partes reexamination.](/cfr/37/1.956.md)
- [§1.957. Failure to file a timely, appropriate or complete response or comment in inter partes reexamination.](/cfr/37/1.957.md)
- [§1.958. Petition to revive inter partes reexamination prosecution terminated for lack of patent owner response.](/cfr/37/1.958.md)
- [§1.959. Appeal in inter partes reexamination.](/cfr/37/1.959.md)
- [§1.961-1.977. Reserved](/cfr/37/1.961-1.977.md)
- [§1.979. Return of Jurisdiction from the Patent Trial and Appeal Board; termination of appeal proceedings.](/cfr/37/1.979.md)
- [§1.981. Reopening after a final decision of the Patent Trial and Appeal Board.](/cfr/37/1.981.md)
- [§1.983. Appeal to the United States Court of Appeals for the Federal Circuit in inter partes reexamination.](/cfr/37/1.983.md)
- [§1.985. Notification of prior or concurrent proceedings in inter partes reexamination.](/cfr/37/1.985.md)
- [§1.987. Suspension of inter partes reexamination proceeding due to litigation.](/cfr/37/1.987.md)
- [§1.989. Merger of concurrent reexamination proceedings.](/cfr/37/1.989.md)
- [§1.991. Merger of concurrent reissue application and inter partes reexamination proceeding.](/cfr/37/1.991.md)
- [§1.993. Suspension of concurrent interference and inter partes reexamination proceeding.](/cfr/37/1.993.md)
- [§1.995. Third party requester's participation rights preserved in merged proceeding.](/cfr/37/1.995.md)
- [§1.997. Issuance and publication of inter partes reexamination certificate concludes inter partes reexamination proceeding.](/cfr/37/1.997.md)