Inland Diamond Products v Cherry Optical (Fed. Cir., October 15, 2025) 2024-1106
This opinion from the United States Court of Appeals for the Federal Circuit, dated October 15, 2025, concerns the case of Inland Diamond Products Co. v. Cherry Optical Inc. The court addresses an appeal from the U.S. District Court for the Eastern District of Wisconsin, which had granted summary judgment that Inland’s asserted patent claims were invalid for obviousness based on the doctrine of issue preclusion following previous inter partes reviews (IPRs). The Federal Circuit determined that the district court erred by applying issue preclusion to facts found by the Patent Trial and Appeal…
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