Diarylethylene metallocene derivatives, their processes of preparation and pharmaceutical compositions containing said derivatives
CA 2235967 C · Owner: Top, Siden · Inventors: Jaouen, Gerard; Top, Siden
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of general Formula (I), (see fig I) wherein R3, R4, R5 and Z are as specifically defined are provided herein, as well as their, processes of preparation; and pharmaceutical compositions containing them. Thesederivatives are suitable for the preparation of antitumoral drugs for use in particular, in, the treatment of estrogen-dependent cancers.
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 11, 1995 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2017.
- 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.