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Expired Canadian patentCanada

Method and devices for the interworking of nodes

CA 2447700 C · Owner: Telefonaktiebolaget Lm Ericsson (Publ) · Inventors: Suihko, Timo; Stuempert, Martin; Mattila, Leena

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Abstract From the Canadian patent

A method for the set-up of a bearer in a communication system from a first node which is adapted to a first bearer protocol to a second node which is adapted to a second bearer protocol is described. The set-up of a bearer is initiated by a message to the first node and an identification of the second node is provided to the first node. The first node determines whether the second node is adapted to the first bearer protocol and sets up the bearer according to the first bearer protocol if the second node is adapted to the first bearer protocol. Else, the first node sets up a bearer according to the first bearer protocol to a conversion node (BIGW) and sends an identification of 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 May 3, 2002 and granted July 12, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 3, 2002
GrantedJuly 12, 2011
Term endedMay 3, 2022
Patent numberCA 2447700 C
Classification (IPC)H04L12/64 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 3, 2002Patent grantedJuly 12, 2011Term endedMay 3, 2022

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