15-deoxyspergualin analogs, their method of preparation and their use in therapeutics
CA 2176670 C · Owner: Dumas, Christine · Inventors: Renaut, Patrice; Dumas, Christine; Lebreton, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a novel compound selected from the group consisting of: (i) the compounds of the formula, in which: A is a group -CO-NH- or a group -NH-CO- R is a hydrogen atom or a methyl group and, *C, if R is not the hydrogen atom is an asymmetric, carbon of (R,S) or (R) configuration; and (ii) their addition salts. It further relates to the method of preparing this compound and to its use in therapeutics.
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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 May 15, 1996 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2018.
- 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.