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BlackBerry Ltd on Tuesday filed a patent infringement lawsuit against Facebook Inc and its WhatsApp and Instagram apps, arguing that they copied technology and features from BlackBerry Messenger.

“Defendants created mobile messaging applications that co-opt BlackBerry’s innovations, using a number of the innovative security, user interface, and functionality enhancing features,” Canada-based BlackBerry said in a filing with a Los Angeles federal court.

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“We have a strong claim that Facebook has infringed on our intellectual property, and after several years of dialog, we also have an obligation to our shareholders to pursue appropriate legal remedies,” BlackBerry spokeswoman Sarah McKinney said.