Expired Canadian patentCanada
Phenylenediamine urotensin-ii receptor antagonists and ccr-9 antagonists
CA 2515780 C · Owner: Gao, Daxin · Inventors: Wang, Junmei; Gao, Daxin; Bui, Huong
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 urotensin II receptor antagonists CCR-9 , antagonists, pharmaceutical compositions containing them and their use.
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 February 18, 2004 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.
FiledFebruary 18, 2004
GrantedDecember 11, 2012
Term endedFebruary 18, 2024
Patent numberCA 2515780 C
Classification (IPC)C07D295/13 +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.