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Expired Canadian patentCanada

Method and apparatus for enabling global telephony capabilities in communication networks

CA 2540799 C · Owner: At&T Corp. · Inventors: Croak, Marian; Eslambolchi, Hossein

CIPO record

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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 method and apparatus for enabling a network service provider e.g. a VoIP network provider, to create configuration files containing network based parameters that support global telephony capabilities (e.g. in country services) such as in country ring tones dialing patterns, network announcements and signaling tones that can be offered to users who want in country telephony capabilities independent of their location is disclosed. These global telephony capability configurations can be downloaded to intelligent IP phones or based in the VoIP network for access by subscribers' telephony devices.

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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 March 21, 2006 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2026.
  • 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.
FiledMarch 21, 2006
GrantedAugust 7, 2012
Term endedMarch 21, 2026
Patent numberCA 2540799 C
Classification (IPC)H04M3/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 21, 2006Patent grantedAug 7, 2012Term endedMarch 21, 2026

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