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Expired Canadian patentCanada

Wireless communication system and method of implementing an evolved system attachment procedure

CA 2615138 C · Owner: Interdigital Technology Corporation · Inventors: Shaheen, Kamel M.

CIPO record

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Abstract From the Canadian patent

A wireless communication system and method of implementing an evolved system attachment procedure are disclosed. The system includes a first core network and a second core network which is evolved from the first core network. A wireless transmit/receive unit (WTRU) sends an attach request message to the second core network. The second core network activates a packet data protocol (PDP) context and sends an attach accept message to the WTRU. The attach accept message includes information regarding the PDP context. The second core network constructs a session and mobility management (SMM) context for session management (SM) and mobility management (MM) for the WTRU.

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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 July 13, 2006 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 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.
FiledJuly 13, 2006
GrantedOctober 8, 2013
Term endedJuly 13, 2026
Patent numberCA 2615138 C
Classification (IPC)H04L12/28

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJuly 13, 2006Patent grantedOct 8, 2013Term endedJuly 13, 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.