( October 6, 2025, 2:07 PM EDT) -- WASHINGTON, D.C. — The U.S. Supreme Court on Oct. 6 rejected a petition for a writ of certiorari from Purdue Pharma LP and related entities, which told the justices that the Federal Circuit U.S. Court of Appeals has created a rigid nexus test when considering evidence of nonobviousness in a dispute over patents controlling Purdue’s Oxycontin drug....