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Expired Canadian patentCanada

System and method for providing caller identification in conjunction with calling card calls

CA 2251507 C · Owner: Bellsouth Corporation · Inventors: Malik, Dale W.

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 system and method for providing calling party identification information to a called party in an intelligent network. A long distance calling card company maintains a subscriber database that includes preferred calling number data and calling name data for each subscriber. When a subscriber places a calling card call the service provider looks up, the subscriber's database record retrieves the preferred calling number data, and sends the calling number data to the terminating end office. A calling name query from the terminating end office is routed to a database that includes data from the service provider's subscriber database. The caller's name is retrieved and returned to the …

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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 October 26, 1998 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 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.
FiledOctober 26, 1998
GrantedFebruary 12, 2002
Term endedOctober 26, 2018
Patent numberCA 2251507 C
Classification (IPC)H04M1/57 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedOct 26, 1998Patent grantedFeb 12, 2002Term endedOct 26, 2018

Sources & verification

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