Expired Canadian patentCanada
12,13-modified epothilone derivatives
CA 2329181 C · Owner: Bristol-Myers Squibb Company · Inventors: Vite, Gregory D.; Hofle, Gerhard; Kim, Soong-Hoon
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 relates to 12,13-position modified epothilone derivatives, methods of preparation of the derivatives and intermediates therefor.
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 April 5, 1999 and granted February 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 5, 1999
GrantedFebruary 22, 2011
Term endedApril 5, 2019
Patent numberCA 2329181 C
Classification (IPC)C07D417/06 +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.