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Expired Canadian patentCanada

Method and system in a wireless communications network for providing toll restrictions based on the geographic location of an originator

CA 2240808 C · Owner: Nortel Networks Corporation · Inventors: Stephens, Gary Boyd

CIPO record

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Abstract From the Canadian patent

A method and system in a wireless communications network for restricting certaincommunication transactions to specific geographic areas in order to reduce the risk of communications fraud are presented. Initially a list of communication transactions is stored such that the list includes communication transactions permitted to occur at each of a number of geographic locations. Thereafter a communications transaction is, initiated. In response to an initiation of the communications transaction a geographic, location of an originator of the communications transaction is determined. Next the list, of communication transactions is automatically scanned for communication transactions permitted to …

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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 16, 1998 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 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.
FiledJune 16, 1998
GrantedMarch 5, 2002
Term endedJune 16, 2018
Patent numberCA 2240808 C
Classification (IPC)H04W48/04 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJune 16, 1998Patent grantedMarch 5, 2002Term endedJune 16, 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.