In a complaint (PDF) filed Friday in Seattle federal court, Microsoft claims Kyocera infringes its patents with three of Kyocera’s lower-cost Android phones. The accused models include the Duraforce, Hydro, and Brigadier.
All three run the Android operating system and are “ruggedized” cell phones, meaning they include features like waterproofing and thick rubbery exteriors.
Microsoft has long maintained that Android device makers must pay royalties for use of its patents. Most Android device-makers pay a royalty to Microsoft for each phone, and estimates of the Redmond company’s patent-licensing revenue ranges up to $2 billion per year.
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