The USPTO’s recently published notice of proposed rulemaking (RIN 0651-AD89, Docket No. PTO-P-2025-0025) for inter partes review (IPR) proceedings seeks to curb multiple IPR challenges to the same patent. This aligns with the USPTO’s recent and decisive shift toward limiting accessibility of IPRs as a means to challenge patents outside of the district courts. While the USPTO claims to promote “fairness, efficiency, and predictability,” the practical impact would be a dramatic change in the risk calculus for accused infringers—especially those who never had their own opportunity to mount a proper challenge. Parties would be stuck with the results of someone else’s work product, no matter how flawed it was. For purposes of §§ 102/103, the USPTO effectively seeks to move beyond the presumption of validity and create a final determination of validity as far as IPR challenges are concerned.Continue Reading USPTO’s Proposed “One and Done” IPR Rule: Rethinking Finality, Fairness, and Efficiency









