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Ridge Corp. et al. v. Kirk NationaLease Co. et al. , Appeal No. 2025-1254 (Fed. Cir. July 13, 2026) In its only precedential patent opinion last week, the Federal Circuit considered an appeal of a preliminary injunction issued by the U.S. District Court…
CASE OF THE WEEK Wyeth LLC v. AstraZeneca Pharmaceuticals LP , Appeal No. 2024-2325 (Fed. Cir. July 9, 2026) In our Case of the Week, the Federal Circuit affirmed a district court ruling reversing a $107.5 million jury verdict against AstraZeneca in a case…
CASE OF THE WEEK Enanta Pharmaceuticals, Inc. v. Pfizer Inc., Appeal No. 2025-1427 (Fed. Cir. Jun. 23, 2026) In our Case of the Week, the Federal Circuit affirmed summary judgment invalidating all claims of Enanta’s Patent No. 11,358,953 as…
CASE OF THE WEEK Ironburg Inventions Ltd. v. Valve Corp., Appeal No. 2024-2088 (Fed. Cir. June 18, 2026) In its only precedential patent opinion last week, the Federal Circuit for the second time considered estoppel under 35 U.S.C. § 315(e) in the…
CASE OF THE WEEK Hikma Pharms USA Inc. v. Amarin Pharma, Inc., Appeal No. 24-889 (Sup. Ct. June 4, 2026) In its first patent case of 2026, the Supreme Court addressed a question of induced infringement as applied to the pharmaceutical industry.…
CASE OF THE WEEK Insulet Corp. v. EOFlow, Co. Ltd., Appeal No. 2025-1807 (Fed. Cir. May 28, 2026) In the Federal Circuit’s only precedential patent decision this week, the Federal Circuit considered a trade secrets case in a 47-page decision,…
CASE OF THE WEEK A.L.M. Holding Company. v. Zydex Industries Private Ltd. , Appeal No. 2025-1317 (Fed. Cir. May 19, 2026) In its only precedential patent opinion last week, the Federal Circuit clarified its position on Article III standing for patent…
CASE OF THE WEEK Enviro Tech Chem. Servs., Inc. v. Safe Foods Corp. , Appeal No. 2024-2160 (Fed. Cir. May 4, 2026) In its only precedential patent opinion last week, the Federal Circuit affirmed a district court’s determination that asserted claims…
CASE OF THE WEEK Federal Express Corp. v. Qualcomm, Inc. , Appeal No. 2024-1236 (Fed. Cir. Apr. 29, 2026) In our Case of the Week, the Federal Circuit considered, as a matter of first impression, whether a party can appeal the Patent Trial and Appeal…
CASE OF THE WEEK Definitive Holdings v. Powerteq LLC , Appeal No. 2024-1761 (Fed. Cir. Apr. 14, 2026) Our Case of the Week concerns an invalidity finding over a piece of prior art that was on sale in the 1990s, and the patent owner’s attempt to avoid…
CASE OF THE WEEK ironSource Ltd. v. Digital Turbine, Inc. , Appeal No. 2024-1831 (Fed. Cir. April 7, 2026) In its only precedential patent opinion last week, the Federal Circuit dismissed an appeal from a post-grant review in which substitute claims were…
Written by : Eric Furman, Ph.D. and Alistair J. McIntyre Key Takeaways : Interference proceedings, though increasingly rare, are heavily evidence-based and determine which party is the first inventor when two or more applicants claim the same patentable…
