Optimum routing system
CA 2249863 C · Owner: Lucent Technologies Inc. · Inventors: Rai, Girish; Chuah, Mooi Choo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless data network includes a wireless packet switched data network for end, users that divides mobility management into local micro, macro and global , connection, handover categories and minimizes handoff updates according to the handover category. The network integrates MAC handoff messages with network handoff messages. The network separately directs registration functions to a registration server and direct routing, functions to inter-working function units. The network provides an intermediate XTunnel, channel between a wireless hub (also called access hub AH) and an interworking, function unit (IWF unit) in a foreign network and it provides an IXTunnel , channel, between an …
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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 October 8, 1998 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2020.
- 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.