AT&T Claims Vonage Infringed VoIP Patent

Law360, New York (October 22, 2007, 12:00 AM EDT) -- Vonage Holdings Corp. is facing yet another patent infringement claim related to Voice-over Internet Protocol, this time from communications giant AT&T, the digital phone service provider revealed Friday.

In a case filed in the U.S. District Court for the Western District of Wisconsin, AT&T alleges that Vonage has infringed on a single patent for a “wide area packet telephony system.” According to the complaint, that invention relates to “telephone systems that allow a person to make calls using Voice over Internet Protocol or VoIP with standard...
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