Expired Canadian patentCanada
Polymorphic, amorphous and hydrated forms of 5-chloro-3-(4-methanesulfonylphenyl)-6'-methyl-2,3'bipyridinyl
CA 2391650 C · Owner: Clas, Sophie-Dorothee · Inventors: Crocker, Louis S.; Clas, Sophie-Dorothee; Davies, Ian
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymorphic, amorphous and hydrated forms of the title compound having the following structure: are disclosed. The compound is a potent and selective cyclooxygenase -2 (COX-2) inhibitor.
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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 November 27, 2000 and granted January 25, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 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.
FiledNovember 27, 2000
GrantedJanuary 25, 2011
Term endedNovember 27, 2020
Patent numberCA 2391650 C
Classification (IPC)C07D213/61 +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.