BlackBerry sues Facebook for patent infringement

"Facebook and its companies developed 'competing applications that improperly used BlackBerry's mobile messaging intellectual property'."We have a strong claim that Facebook has infringed on our intellectual property, and after several years of dialogue, we also have an obligation to our shareholders to pursue appropriate legal remedies."-Sarah McKinney, spokeswoman, BlackBerry
Last year Qualcomm paid BlackBerry $940 million after an arbitration panel confirmed that the chip designer owed BlackBerry the money to resolve a battle over royalties. A few months later, BlackBerry collected an undisclosed amount from Florida's Blu Products Inc. in another patent infringement case. And John Chen and crew are still awaiting the outcome of a suit BlackBerry filed in Delaware against Nokia in February 2017, related to Nokia's use of 3G and 4G wireless communication technologies on some of its devices.
source: Reuters