System and method for reducing information communicated between universal mobile telecommunication system multimedia capable units
CA 2448653 A1 · Owner: Interdigital Technology Corporation · Inventors: Shaheen, Kamel M.; Kiernan, Brian G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and Apparatus for making more efficient use of air link resources and network capacity in a mobile telecommunicationS system in which unauthorized and/or unsupported media types transmitted in a session initialization protocol (52) message sent from one equipment user (46) to another are deleted by the network(s) as the session initialization protocol message (52) is routed through the system.
Read the whole patent
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 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 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.
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.