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Expired Canadian patentCanada

A client-server network for managing internet protocol voice packets

CA 2394008 C · Owner: Mckinnon, Steve John · Inventors: Navaratnam, Srivallipuranandan; Fobert, Joseph; Mckinnon, Steve John

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A client-server network for managing internet protocol voice data packets includes a client terminal (16), for , re-ceiving internet protocol voice data packets; a graphical display (20) for , conveying information to a client terminal user; a client terminal controller, for controlling the client terminal; a terminal proxy server (14), responsive to the internet protocol voice data packets, for sending synchronized signals to the client terminal and the client terminal controller to notify a client terminal user of the voice data packets, the client terminal controller in response to the , synchronized signal adapted to retrieve information about the incoming caller and convey the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed December 13, 2000 and granted February 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 2000
GrantedFebruary 8, 2011
Term endedDecember 13, 2020
Patent numberCA 2394008 C
Classification (IPC)H04M7/00 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedDec 13, 2000Patent grantedFeb 8, 2011Term endedDec 13, 2020

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.