The Patent Trial and Appeal Board (PTAB) has become the busiest forum for patent disputes nationwide, and Fish & Richardson is a constant presence there. We have handled more inter partes review (IPR) proceedings than any other firm, consistently outpacing our competitors.

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Inter Partes Review

CAFC Clarifies "Skilled Searcher" Inquiry for IPR Estoppel

USPTO’s Proposed IPR Institution Rule Advances to Final Review

PTAB Extends Deadline for Patent Owners to Request Director Review

Director Review Spotlight: Consistency Matters Across Litigation Forums

USPTO Details Broad Principles of Discretionary Denial in AIA Proceedings

Teva v. Lilly: Conflicting Positions at PTAB and District Court Sink Patent Challenge

2025 Post-Grant Annual Report

Congressional Oversight Hearing Highlights Continued PTAB Policy Fault Lines

Federal Circuit Denies All Mandamus Petitions Challenging Discretionary Denial Policies

USPTO Adds Three New Factors to Discretionary Denial Considerations