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PTAB Invalidates Patent As Earbud-Makers Duel

By Kyle Jahner (July 21, 2017, 4:11 PM EDT) -- An earbud company convinced the Patent Trial and Appeal Board to invalidate a patent on a rival's earbud system on Wednesday for combining existing inventions in an obvious way, drawing first blood in an industry feud involving four patent challenges and two infringement lawsuits....

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