(December 14, 2023, 1:22 PM EST) -- WASHINGTON, D.C. — A user guide for the Sourcefire “3D System” discloses “nearly every limitation” of various challenged claims of a threat detection patent that was correctly canceled by the Patent Trial and Appeal Board as obvious, Palo Alto Networks Inc. (PAN) maintains in an appellee brief filed with the Federal Circuit U.S. Court of Appeals....