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Expired Canadian patentCanada

System and method for providing remote automatic speech recognition services via a packet network

CA 2228917 C · Owner: At&T Properties, Llc · Inventors: Dragosh, Pamela Leigh; Sharp, Robert Douglas; Roe, David Bjorn

CIPO record

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Abstract From the Canadian patent

A system and method of operating an automatic speech recognition service using a client-server architecture is used to make ASR services accessible at a client location remote from the location of the main ASR engine. The present invention utilizes client-server communications over a packet network, such as the Internet, where the ASR server receives a grammar from the client, receives information representing speech from the client, performs speech recognition and, returns information based upon the recognized speech to the client.

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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 5, 1998 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2020.
  • 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 5, 1998
GrantedMarch 19, 2002
Term endedFebruary 5, 2018
Patent numberCA 2228917 C
Classification (IPC)H04M3/42 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedFeb 5, 1998Patent grantedMarch 19, 2002Term endedFeb 5, 2018

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