(November 20, 2020, 1:35 PM EST) -- ALEXANDRIA, Va. — In a Nov. 19 petition for inter partes review (IPR) filed with the Patent Trial and Appeal Board, several technology companies assert that a patent relating to data packet routing should be canceled (Palo Alto Networks Inc., et al. v. Sable Networks Inc., No. IPR2021-00203, PTAB)....