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Expired Canadian patentCanada

Computer-implemented voice markup system and method

CA 2392014 C · Owner: Shen, Liang · Inventors: Shen, Liang; Shunmuganathan, Umakanthan

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 computer-implemented method and system for processing a service request received from a telephone communication device. The telephony system and method utilizes a call management server and a voice interpreter server. The call management server receives an incoming call from a user and the voice interpreter server processes the service request contained in the incoming call. Data communication encapsulation is used to communicate data between the call management server and the voice interpreter platform in order to process the service request.

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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 June 27, 2002 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 2002
GrantedAugust 7, 2012
Term endedJune 27, 2022
Patent numberCA 2392014 C
Classification (IPC)H04L12/66 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJune 27, 2002Patent grantedAug 7, 2012Term endedJune 27, 2022

Sources & verification

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