Tag: patent litigation
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Ironburg v. Valve: Federal Circuit Clarifies How Parties Must Prove IPR Estoppel Under §315(e)
The Federal Circuit’s decision in Ironburg Inventions Ltd. v. Valve Corp., Case No. 2024-2088 (Fed. Cir. June 18, 2026), limits when a patent owner may use inter partes review estoppel to prevent an accused infringer from asserting prior-art invalidity grounds in district court. The court held that a reference is not necessarily discoverable merely because…
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Columbia University v. Gen Digital: $185M Cybersecurity Patent Verdict Reopened and Trial Counsel Sanctions Vacated
A pair of related decisions issued by the Federal Circuit in Trustees of Columbia University v. Gen Digital Inc. , Nos. 24-1243, -1244 (Fed. Cir. Mar 11, 2026), address two issues that often arise together in complex patent litigation: the evolving scope of patent eligibility under Alice, and the limits of sanctions imposed on litigation…
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Barry v. DePuy Synthes: Federal Circuit Limits Daubert Exclusion of Patent Experts
On January 20, 2026, the Federal Circuit issued a significant decision clarifying the boundary between judicial gatekeeping under Daubert and the jury’s role as factfinder in patent infringement trials. In Barry v. DePuy Synthes Companies, the court reversed the exclusion of two key experts and vacated a judgment as a matter of law entered after…