Transitive authentication authorization accounting in interworking between access networks
CA 2482648 C · Owner: Interdigital Ce Patent Holdings · Inventors: Zhang, Junbiao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a system for allowing a user device (240) that has already been authenticated by a first communications network to gain access to a second communications network without undergoing authentication by the second communications network. The first communications network and the second communications network have a pre-established trust relationship there between. A packet is received from the user device (240) that includes a user device public key, by the second network via the first network (210). A session key is sent from the second network (220) to the user device (240) via the first network (210), when a source Internet Protocol (IP) address associated with 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 12, 2003 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.