USPTO Removes Reliance on Applicant Admitted Prior Art in IPR Proceedings
Aug 01 2025
On July 31, 2025, the acting Director of the United States Patent and Trademark Office (USPTO) published a memorandum making a significant change in Patent Trial and Appeal Board (PTAB) inter partes review (IPR) practice and procedures.
Effective September 1, 2025, the PTAB will no longer waive and will enforce the requirement under 37 C.F.R. § 42.104(b)(4) that requires petitioners specify where each element of the claim is found in the relied-upon prior art patents or printed publications. Critically, the memorandum clarifies that the “prior art patents and printed publications” that may form the basis of a ground of rejection in an IPR excludes Applicant Admitted Prior Art (AAPA), expert testimony, common sense, and any other evidence other than prior art patents or printed publications. According to the memorandum, this change aims to provide clarity to parties in IPR proceedings while aligning with recent Federal Circuit precedent.
Key Changes:
Stepping back, this memorandum represents another in a slew of recent memoranda issued by the USPTO that expressly supersede memoranda issued during the prior administration relating to post-grant proceedings. Also similar to recent memoranda and procedural changes, this change favors patent owners by preventing the use of the patentees’ own disclosures from being directly cited against their patents. However, despite this change, patentees should continue to carefully consider when it is beneficial to characterize and describe the prior art (or the state of the art) in patent applications and when such information is best omitted in favor of focusing on the advance in the art that forms the basis of the application.