Following up on patent infringement suits it filed against Facebook and Snapchat, which claimed that the messaging apps infringed on its patents, BlackBerry has filed a similar lawsuit against Twitter. Scribd published the entire filing (via CrackBerry), which was submitted in The U.S. District Court for The Central District of California. The patents that BlackBerry is accusing Twitter of using without permission deal with messaging on mobile devices. BlackBerry Messenger (BBM), one of the first mobile messaging applications, was launched on August 1st, 2005. Until 2013, BBM was exclusive ...
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