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Typo Products tells U.S. judge BlackBerry's patent claims are invalid

CALIFORNIA: BlackBerry Ltd's patent claims related to an attachable keyboard accessory for Apple Inc's iPhones don't comply with legal requirements for patentability, Typo Products LLC said in a court filing late on Tuesday.

BlackBerry sued Typo last month, saying its physical keyboard that can be attached to some of Apple's iPhone models infringes patents.

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