Ironburg Inventions Ltd. v. Valve Corporation (Fed. Cir., June 18, 2026) 2024-2088
This episode concerns the case of Ironburg Inventions Ltd. v. Valve Corporation, in which the United States Court of Appeals for the Federal Circuit reviewed whether Valve was rightfully barred from using specific prior art referencesto challenge a video game controller patent. The appellate court reversed a lower court's ruling on inter partes review (IPR) estoppel, finding that the initial decision relied on flawed search evidence and hindsight bias. Specifically, the court determined that simply appearing in a classification search of over 26,000 results does not make a reference…
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