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BlackBerry’s complaint claims the company invented core aspects of modern messaging, such as notification icons, and when and how time stamps show up in a thread. This photo shows a Blackberry in 2007. (Bloomberg file photo)
BlackBerry’s complaint claims the company invented core aspects of modern messaging, such as notification icons, and when and how time stamps show up in a thread. This photo shows a Blackberry in 2007. (Bloomberg file photo)

BlackBerry’s suit is latest salvo in patent battle

BlackBerry Ltd., seeking ways to stem revenue declines, is dusting off its old patents and asking other companies to pay up for using technology BlackBerry claims it invented years ago. The latest skirmish broke out on Tuesday, when BlackBerry sued Facebook Inc. in federal court in Los Angeles, claiming the social media giant has built swaths ...

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