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Expired Canadian patentCanada

Media transmission system and method

CA 2473475 C · Owner: Accenture International Sarl · Inventors: Crichton, Daniel

CIPO record

Overview

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

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Abstract From the Canadian patent

A media transmission system and method for the transmission of a desired one of a plurality of broadcast media channels to a remote client over a data connection is disclosed. The system includes means for routing data for a first one of the broadcast media channels over the data connection to the remote client and means for routing data for an alternate one of the channels over the data connection following receipt of a channel change request from a user; this allows efficient use of a limited bandwidth data connection.

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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 February 4, 2003 and granted April 25, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 4, 2003
GrantedApril 25, 2017
Term endedFebruary 4, 2023
Patent numberCA 2473475 C
Classification (IPC)H04N21/23 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedFeb 4, 2003Patent grantedApril 25, 2017Term endedFeb 4, 2023

Sources & verification

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