( July 31, 2026, 10:12 AM EDT) -- WASHINGTON, D.C. — A split Federal Circuit U.S. Court of Appeals panel affirmed an Illinois federal judge’s decision to dissolve a preliminary injunction issued against a defendant-appellee and deny a temporary restraining order against new defendants in a dispute over a design patent covering a foldable fan, rejecting the plaintiff-appellant’s contention that collateral estoppel barred the judge from reconsidering the injunction and that the judge impermissibly relied on a later-issued, presumptively valid design patent to conclude that the plaintiff-appellant was unlikely to prove infringement....