Widevine has filed a claim for patent infringement against Verimatrix. The lawsuit accuses Verimatrix of infringing a Widevine patent through its ViewRight client application. The lawsuit seeks damages and an injunction to stop sales of the infringing products.This patent describes a process and streaming server for encrypting a data stream to a virtual smart card client system. The patent generally covers software-based "virtual smart cards" on a set top box, personal video recorder (PVR), PC or mobile device that manage the flow of data over a network. Widevine already had other claims underway against Verimatrix, which denies all the claims and defending itself vigorously. A court case is not expected before 2010.

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