Apple must pay a U.S. patent holder $502 million for the use of 4G patents in devices including iPhones and iPads, London’s Court of Appeal ruled on Thursday, in the latest stage of a long-running legal battle. Texas-based Optis Cellular …

Apple must pay a U.S. patent holder $502 million for the use of 4G patents in devices including iPhones and iPads, London’s Court of Appeal ruled on Thursday, in the latest stage of a long-running legal battle. Texas-based Optis Cellular …