Expired Canadian patentCanada
Novel taxanes and methods related to use and preparation thereof
CA 2501805 C · Owner: Phytogen Life Sciences, Inc. · Inventors: Naidu, Ragina
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are compounds of formula having utility as intermediates in the preparation of paclitaxel, taxotere and analogs thereof and intermediates , thereof.
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 October 9, 2003 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 9, 2003
GrantedMay 22, 2012
Term endedOctober 9, 2023
Patent numberCA 2501805 C
Classification (IPC)C07D305/14 +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.