Facebook may have secured a patent for its news feed technology, and Google for location-based ads , but that doesn’t make the two companies immune to other patent challengers. In fact, both Google and Facebook are being sued by Winksite over mobile social networking technology. The complaint, first reported by Bloomberg, was said to be filed by Winksite yesterday in a Manhattan federal court, and points to patent infringement claims around Facebook Mobile and Google Buzz

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Google and Facebook Sued for Mobile Patent Infringement