Pyrazolidine-1,2-dicarboxyldiphenylamide derivatives as coagulation factor xa inhibitors for the treatment of thromboses
CA 2520894 C · Owner: Mederski, Werner · Inventors: Mederski, Werner; Dorsch, Dieter; Tsaklakidis, Christos
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel compounds of formula (I) where R, R1, R2 and , R3 have the meanings given in claim 1 which are inhibitors of coagulation , factor Xa and can be used for the prophylaxis and/or therapy of thromboembolic diseases and for the treatment of tumours.
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 March 9, 2004 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 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.
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.