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Expired Canadian patentCanada

Reduced data session establishment time in cdma-2000 networks

CA 2559317 C · Owner: Senthilnathan, Janakiraman · Inventors: Puthiyandyil, Sanil; Senthilnathan, Janakiraman; Harper, Matthew Hayden

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Abstract From the Canadian patent

Systems and methods for establishing and operating data sessions between mobile subscriber units and packet data servers on a wireless communication network are presented. Some aspects described herein are directed to preventing the loss of an initial configuration request signal (e.g. under the LCP protocol) from a packet data server to a mobile subscriber prior to successful establishment of a radio air link to the mobile subscriber. Other aspects are directed to detecting the presence or absence of a radio air link to the mobile subscriber as a determinant of whether the packet data server is to send a configuration request signal to the mobile subscriber or whether , the packet …

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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 10, 2004 and granted July 19, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2026.
  • 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 10, 2004
GrantedJuly 19, 2016
Term endedMarch 10, 2024
Patent numberCA 2559317 C
Classification (IPC)H04W60/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 10, 2004Patent grantedJuly 19, 2016Term endedMarch 10, 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.