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IP Telephony Intellectual Property

This page provides information on patents that have been reported to Packetizer that potentially cover packet-switch conversational protocols, including Voice over IP (VoIP) and videoconferencing. There are links to pages that reportedly provide information that might demonstrate some prior art to patent claims. If you would like to see something listed here or have comments to make, please send e-mail to the webmaster.

United States

Potential Source of Prior Art