Microsoft is facing yet another patent challenge, this time over its Skype division, from VirnetX, the company that took $200m from the software giant in 2010.
In that original case, Microsoft paid up to end the lawsuit filed by VirnetX over the use of patented virtual private network (VPN) components. Now, the firm is going after Microsoft again over its Skype technology, claiming this infringes on patents held by VirnetX.
“Although Microsoft previously signed a patent licence with Virnetx, we believe they are infringing our patents in ways that are outside the scope of the original licence," said Kendall Larsen, VirnetX chief executive. "We look forward to quickly resolving this matter."
V3 contacted Microsoft for comment but had not received a reply at the time of publication.
VirnetX has a good track record against major technology vendors. Not only did it win $200m as mentioned, but Apple was also ordered to pay it $368m by a US jury in a case relating to patented technology used in the tech giant's FaceTime system. VirnetX had originally asked for $708m.
Microsoft is involved in numerous legal tussles on its patents, such as against Motorola, and has also signed deals with numerous firms using the Android operating system over patent in use that it owns. Last week it signed a deal with Foxconn's parent company on these holdings.
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