Title 35, PatentsRelease 119-110

§322 Petitions

Title 35 › PART III — PATENTS AND PROTECTION OF PATENT RIGHTS › CHAPTER 32 — POST-GRANT REVIEW › § 322

Last updated Sep 22, 2026|Official source

Summary

To be considered under section 321, a petition must follow certain rules. The filer must pay the fee set by the Director, name every real party in interest, say exactly which claims are being challenged and why, and give the evidence for each challenge (including copies of patents or publications and any affidavits or expert statements). The petitioner must also give any other information the Director requires and provide copies of these materials to the patent owner or their representative. After the Director gets the petition, the Director must make it available to the public as soon as possible.

Full Legal Text

Title 35, §322

Patents, Source: USLM XML via OLRC

(a)Requirements of Petition.—
A petition filed under section 321 may be considered only if—
(1)the petition is accompanied by payment of the fee established by the Director under section 321;
(2)the petition identifies all real parties in interest;
(3)the petition identifies, in writing and with particularity, each claim challenged, the grounds on which the challenge to each claim is based, and the evidence that supports the grounds for the challenge to each claim, including—
(A)copies of patents and printed publications that the petitioner relies upon in support of the petition; and
(B)affidavits or declarations of supporting evidence and opinions, if the petitioner relies on other factual evidence or on expert opinions;
(4)the petition provides such other information as the Director may require by regulation; and
(5)the petitioner provides copies of any of the documents required under paragraphs (2), (3), and (4) to the patent owner or, if applicable, the designated representative of the patent owner.
(b)Public Availability.—
As soon as practicable after the receipt of a petition under section 321, the Director shall make the petition available to the public.

Legislative History

Notes & Related Subsidiaries

Statutory Notes and Related Subsidiaries

Effective Date

Section effective upon the expiration of the 1-year period beginning Sept. 16, 2011, and applicable only to patents described in section 3(n)(1) of Pub. L. 112–29 (35 U.S.C. 100 note), with certain exceptions and limitations, see section 6(f)(2), (3) of Pub. L. 112–29, set out as a note under section 321 of this title.

Reference

Citations & Metadata

Citation

35 U.S.C. § 322

Title 35, Patents

Last Updated

Sep 22, 2026

Release point: 119-110