Jun 18 2026
Fed. Cir. 24-2088 Panel Decision

IRONBURG INVENTIONS LTD v. VALVE CORPORATION

The United States Court of Appeals for the Federal Circuit reversed a district court ruling that estopped Valve Corporation from asserting invalidity grounds in a patent infringement suit. The appellate court found the district court relied on insufficient evidence and failed to adequately account for hindsight bias in its estoppel analysis.

Jun 16 2026
10th Cir. 22-2132 Panel Decision

United States v. New Mexico Environment Department, et al.

The Tenth Circuit reversed a district court dismissal, holding that the Resource Conservation and Recovery Act does not strip federal courts of jurisdiction over suits brought by the United States against state environmental agencies. The court further ruled that the Colorado River abstention doctrine did not justify deferring to parallel state proceedings in this context.

Jun 15 2026
Fed. Cir. 24-1516 Panel Decision

MEDMIX SWITZERLAND AG v. SQUIRES

The United States Court of Appeals for the Federal Circuit affirmed a Patent Trial and Appeal Board decision finding a patent for a fluid mixing device unpatentable as obvious. The court held that the patent claims did not require ramps to have an inclined plane shape and that the Board properly found a motivation to combine prior art references.