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Expired Canadian patentCanada

System and method for improving the quality of real time multimedia sessions

CA 2590158 C · Owner: Telchemy, Incorporated · Inventors: Clark, Alan D.

CIPO record

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Abstract From the Canadian patent

The present invention provides a system and method for improving the quality of real-time multimedia sessions wherein each endpoint of a real-time packet stream transmits feedback reports (26) that describe the quality of the stream received by the endpoint and forward reports (28 and 32) that are based on the feedback reports received by the endpoint and that describe the quality of the stream received by the other, remote endpoint. The forward reports are used by routers to re-route packets around problems in the network that are located between the router and the remote endpoint.

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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 19, 2005 and granted April 22, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 19, 2005
GrantedApril 22, 2014
Term endedDecember 19, 2025
Patent numberCA 2590158 C
Classification (IPC)H04L43/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedDec 19, 2005Patent grantedApril 22, 2014Term endedDec 19, 2025

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