Mealey's (May 15, 2020, 7:06 AM EDT) -- WASHINGTON, D.C. — A federal judge in California correctly determined that four patents relating to voice over internet protocol (VoIP) are drawn to an abstract idea and recite no inventive concept, infringement defendants Apple Inc. and Amazon.com Inc. maintain in a May 6 appellee brief (VoIP-Pal.com Inc. v. Apple Inc., et al., No. 20- 1241, 20-1244, Fed. Cir.)....