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Expired Canadian patentCanada

Videoconferencing method and system for connecting a host with a plurality of participants

CA 2356872 C · Owner: Melton, Richard Lee · Inventors: Forkner, Terry Ray; Lamar, George Thomas; Melton, Richard Lee

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Abstract From the Canadian patent

An improved videoconferencing system and method are provided for connecting a host (210) to a plurality of participants (220 230, 240). Unlike other , videoconferencing methods and systems the videoconferencing system and method of these preferred embodiments allow each of the parties of a videoconference to benefit from the interaction between the host (210) and a selected participant without limiting the number of participants that can join the video conference. The host (210) and participants (220 230, 240) can interact , with the videoconferencing system by issuing voice commands or DTMF signals to a voice response unit or by using a computer to access the videoconferencing …

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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 3, 1999 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2021.
  • 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 3, 1999
GrantedDecember 23, 2003
Term endedDecember 3, 2019
Patent numberCA 2356872 C
Classification (IPC)H04N7/14 +1 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedDec 3, 1999Patent grantedDec 23, 2003Term endedDec 3, 2019

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