Friday, February 8, 2008

More VoIP Patent Trouble

Verizon now is suing Charter Communications as well as Cox Communications for infringing eight VoIP patents. Included are the three patents Vonage was found guilty of infringing last year, plus several that relate to maintaining quality of service. In principle, it is not clear why every major cable company in the U.S. market is not guilty of infringement if Cox is found to be infringing, as virtually all the cable operators use the PacketCable framework.

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