Expired Canadian patentCanada
(1s,5s)-3-(5,6-dichloro-3-pyridinyl)-3,6-diazabicyclo3.2.0heptane is an effective analgesic agent
CA 2526530 C · Owner: Buckley, Michael J. · Inventors: Buckley, Michael J.; Ji, Jianguo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses (1S,5S)-3-(5,6-dichloro-3-pyridinyl)-3,6diazabicyclo3.2.0heptane and its use to treat pain and other disorders associated with the nicotinic acetylcholine receptor.
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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 20, 2004 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2026.
- 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 20, 2004
GrantedJanuary 8, 2013
Term endedMay 20, 2024
Patent numberCA 2526530 C
Classification (IPC)C07D487/04 +2 more
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.