(September 19, 2024, 9:55 AM EDT) -- WASHINGTON, D.C. — A federal judge in Delaware abused his discretion by issuing a ruling after a bench trial in a patent dispute between pharmaceutical manufacturers over a drug for overactive bladders by determining that the plaintiff company’s patent was invalid based on an invalidity defense the parties stipulated not to invoke, a Federal Circuit U.S. Court of Appeals panel held Sept. 18, reversing the judge’s June 2023 decision....