U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 31, 2025

All TitlesTitle 37Chapter IPart 42Subpart A - Subpart A—Trial Practice and Procedure

GENERAL
§ 42.1 - Policy.
§ 42.2 - Definitions.
§ 42.3 - Jurisdiction.
§ 42.4 - Notice of trial.
§ 42.5 - Conduct of the proceeding.
§ 42.6 - Filing of documents, including exhibits; service.
§ 42.7 - Management of the record.
§ 42.8 - Mandatory notices.
§ 42.9 - Action by patent owner.
§ 42.10 - Counsel.
§ 42.11 - Duty of candor; signing papers; representations to the Board; sanctions.
§ 42.12 - Sanctions.
§ 42.13 - Citation of authority.
§ 42.14 - Public availability.

FEES
§ 42.15 - Fees.

PETITION AND MOTION PRACTICE
§ 42.20 - Generally.
§ 42.21 - Notice of basis for relief.
§ 42.22 - Content of petitions and motions.
§ 42.23 - Oppositions, replies, and sur-replies.
§ 42.24 - Type-volume or page limits for petitions, motions, oppositions, replies, and sur-replies.
§ 42.25 - Default filing times.

TESTIMONY AND PRODUCTION
§ 42.51 - Discovery.
§ 42.52 - Compelling testimony and production.
§ 42.53 - Taking testimony.
§ 42.54 - Protective order.
§ 42.55 - Confidential information in a petition.
§ 42.56 - Expungement of confidential information.
§ 42.57 - Privilege for patent practitioners.
§ 42.61 - Admissibility.
§ 42.62 - Applicability of the Federal rules of evidence.
§ 42.63 - Form of evidence.
§ 42.64 - Objection; motion to exclude.
§ 42.65 - Expert testimony; tests and data.

ORAL ARGUMENT, DECISION, AND SETTLEMENT
§ 42.70 - Oral argument.
§ 42.71 - Decision on petitions or motions.
§ 42.72 - Termination of trial.
§ 42.73 - Judgment.
§ 42.74 - Settlement.
§ 42.75 - Director review.

CERTIFICATE
§ 42.80 - Certificate.
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