Method and apparatus for voice over internet protocol swapping in a communication system
CA 2312079 C · Owner: Lamarque, John X. Iii · Inventors: Lamarque, John X. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus in a communications system for routing a call. A request is received from a user, at a first terminal during a call to switch , the call from a packet based network to a circuit switched network. Responsive to receiving the , request, the call is switched to a second terminal associated with the user wherein the , second terminal uses the circuit switched network and wherein the call is switched to , the second terminal without terminating the call.
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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 June 20, 2000 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2022.
- 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
Timeline From CIPO dates
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.