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A small networking company is suing three tech titans for patent infringement. Cygnus Systems has filed suit in the U.S. District Court in Arizona, alleging that Microsoft, Google and Apple have all violated a patent Cygnus received in March 2008 on the use of document preview icon, or so-called thumbnail, technology. The patent is described as a method for accessing a computer file via a graphical icon, which features an image of a portion of the file. Google, Microsoft and Apple, according to the suit, are using the technology in their respective software applications.
Free PDF download of Cygnus' patent at Patent Retriever http://www.patentretriever.com