Facebook Inc. filed a suit against BlackBerry Ltd. Tuesday accusing the device-maker of allegedly infringing on six of its patents, including voice messaging technology and security components, following BlackBerry’s suit against the social media company earlier this year. The six patents relate to a number of proprietary technologies, including the option to switch to voice calls from an instant messaging chat, a multiplatform device manager, GPS technology that allows users to monitor multiple-tracked devices from a single location, and a dedicated security processor that functions...
