Net2Phone, which filed its lawsuit last week in U.S. District Court in New Jersey, alleges that Skype infringed on its patent, No. 6,108,704. The Voice over Internet Protocol (VoIP) patent was issued to Net2Phone in August 2000.
Net2Phone's lawsuit comes as the VoIP industry has seen afrom small start-ups to large, established Internet service providers.
Net2Phone alleges that Skype, a wholly owned subsidiary of eBay, violated its "point-to-point Internet Protocol" patent. The patent calls for the exchange of IP addresses between processing units in order to establish a direct communications link between the devices via the Internet.
Skypeto operate its VoIP service, whereas companies such as Vonage and AT&T largely use a system that is centrally managed to transfer calls to a traditional phone network.