Coming off economically stinging defeats in both court and out of court settlements, Vonage, the largest VoIP provider is now being sued in Wisconsin by AT&T for patent infringement.
Earlier this month, Vonage agreed to pay $80 million to Sprint/Nextel to settle patent infringement litigation. This, hot on heals of the Verizon judgement and a settlement with Klausner Technologies, another infringement case, which had been seeking $200 million, Vonage seems to have become the lightning rod for VoIP patent issues
Taken together, the patent litigation against Vonage covers a wide range of properties from voice mail to interconnect links and includes compression and packet technologies.
Vonage, the largest VoIP provider , is headquartered in Holmdel, New Jersey.