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Expired Canadian patentCanada

Method and apparatus for calculating a position estimate of a mobile station using network information

CA 2546875 C · Owner: Patrick, Christopher · Inventors: Patrick, Christopher

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Abstract From the Canadian patent

A method for calculating a position estimate of a mobile station (MS) includes collecting in the MS position estimate information (PEI) transmitted by a location node. At some point, the MS generates PEI parameters which include information from which the location node can be located or identified. The MS generates the PEI parameters based upon the PEI transmitted by the location node. Once generated, the MS sends the PEI parameters to a position determination entity. The PEI parameters permit calculation of the position estimate of the mobile station.

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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 November 24, 2004 and granted July 19, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2024.
  • 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.
FiledNovember 24, 2004
GrantedJuly 19, 2016
Term endedNovember 24, 2024
Patent numberCA 2546875 C
Classification (IPC)H04W64/00 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedNov 24, 2004Patent grantedJuly 19, 2016Term endedNov 24, 2024

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