On October 31, 2025, the Director of the United States Patent and Trademark Office (USPTO) issued a notice denying institution of inter partes review (IPR) in 13 separate proceedings. The notice listed only the docket numbers of the affected IPRs and offered no substantive explanation for the denials, stating simply: “Pursuant to 35 U.S.C. § 314(a), institution of inter partes review is denied in the [listed] proceedings.” The summary denial follows the Director’s October 17, 2025, memorandum, which stated that the authority to determine whether to institute trial for IPR and post-grant review (PGR) proceedings rests solely with the USPTO Director.

Practice note: The October 17 memorandum signaled a shift in procedural control and reflected a broader policy approach to discretionary denials. While the October 31 notice provides limited insight into the basis for denial, it underscores the importance of understanding the USPTO’s evolving stance on institution discretion. Practitioners and petitioners alike should monitor future developments closely, as they may impact strategic considerations for filing and defending IPRs.