(April 18, 2017, 10:50 AM EDT) -- ALEXANDRIA, Va. — A patented network-computer-based personal contact manager system renders a claimed system for sharing information over the internet unpatentable, Facebook Inc. alleges in an April 14 petition for inter partes review filed with the Patent Trial and Appeal Board (Facebook Inc. v. ZKey Investments LLC, No. IPR2017-01278, PTAB)....