VirnetX Files Patent Suit Against Microsoft Over Skype

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VirnetX Holding Corp. which won a $200 million settlement from Microsoft Corp. over patents related to private networks in 2010, filed a new lawsuit today claiming it’s entitled to more money.

VirnetX said Microsoft’s Skype unit, which allows instant messaging and Internet calling, is infringing six patents. Skype, which Microsoft bought in October 2011 for $8.5 billion, wasn’t part of that earlier deal, Zephyr Cove, Nevada-based VirnetX said in a statement today.