(September 28, 2017, 12:12 PM EDT) -- ALEXANDRIA, Va. — In a Sept. 25 final written decision, the Patent Trial and Appeal Board found that four claims of a Sony Corp. patent directed to a method for swift selection of a desired television channel would have been obvious over a combination of four pieces of prior art (Arris International PLC v. Sony Corporation, No. IPR2016-00835, PTAB)....