Title 35, PatentsRelease 119-102

§24 Subpoenas, Witnesses

Title 35 › PART I — UNITED STATES PATENT AND TRADEMARK OFFICE › CHAPTER 2 — PROCEEDINGS IN THE PATENT AND TRADEMARK OFFICE › § 24

Last updated Aug 21, 2026|Official source

Summary

When a party asks in a contested Patent and Trademark Office case, the clerk of the U.S. district court must issue a subpoena for any witness in that district to testify before an officer authorized to take depositions and affidavits at the stated time and place. Federal civil‑procedure rules on witnesses and producing documents apply, and witnesses get the same fees and travel expenses as U.S. district court witnesses. A judge may enforce the subpoena, but a witness cannot be held in contempt unless travel costs and one day's attendance is paid or offered when the subpoena is served. A witness may refuse to disclose a secret unless the issuing court orders disclosure.

Full Legal Text

Title 35, §24

Patents, Source: USLM XML via OLRC

The clerk of any United States court for the district wherein testimony is to be taken for use in any contested case in the Patent and Trademark Office, shall, upon the application of any party thereto, issue a subpoena for any witness residing or being within such district, commanding him to appear and testify before an officer in such district authorized to take depositions and affidavits, at the time and place stated in the subpoena. The provisions of the Federal Rules of Civil Procedure relating to the attendance of witnesses and to the production of documents and things shall apply to contested cases in the Patent and Trademark Office. Every witness subpoenaed and in attendance shall be allowed the fees and traveling expenses allowed to witnesses attending the United States district courts. A judge of a court whose clerk issued a subpoena may enforce obedience to the process or punish disobedience as in other like cases, on proof that a witness, served with such subpoena, neglected or refused to appear or to testify. No witness shall be deemed guilty of contempt for disobeying such subpoena unless his fees and traveling expenses in going to, and returning from, and one day’s attendance at the place of examination, are paid or tendered him at the time of the service of the subpoena; nor for refusing to disclose any secret matter except upon appropriate order of the court which issued the subpoena.

Legislative History

Notes & Related Subsidiaries

Historical and Revision Notes

Based on Title 35, U.S.C., 1946 ed., §§ 54, 55 and 56 (R.S. 4906, amended Feb. 18, 1922, ch. 58, § 7, 42 Stat. 389, 391–2; R.S. 4907; R.S. 4908). Three sections of the existing statute are combined with some changes in language and placed in part 1 since they apply to trade-mark cases in the Patent Office as well as to patent cases. Reference to a repealed statute in the first paragraph is replaced by reference to the Federal Rules of Civil Procedure and certain rules are made applicable.

Editorial Notes

References in Text

The Federal Rules of Civil Procedure, referred to in text, are set out in the Appendix to Title 28, Judiciary and Judicial Procedure.

Amendments

1975—Pub. L. 93–596 substituted “Patent and Trademark Office” for “Patent Office” in two places.

Statutory Notes and Related Subsidiaries

Effective Date

of 1975 AmendmentAmendment by Pub. L. 93–596 effective Jan. 2, 1975, see section 4 of Pub. L. 93–596, set out as a note under section 1111 of Title 15, Commerce and Trade.

Reference

Citations & Metadata

Citation

35 U.S.C. § 24

Title 35, Patents

Last Updated

Aug 21, 2026

Release point: 119-102