Lhrh antagonists and intermediate products
CA 2109830 C · Owner: Mulzer, Johann · Inventors: Thamm, Paul; Habenicht, Ursula; Mulzer, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns LHRH antagonists of the general formula (I), in which X is an acyl group X1 is a D-Nal, X2, is D-(4-C1)-Phe, X3 is D-(3)-Pal X6 is D-Cit or D-Neu, X8 is, L-Arg or L-Neu at least one of the groups X6 and X8 being a Neu, and X10 is D-Ala-NH2, Neu being a group formulae (II) (III) or (IV), wherein W is one of the group (a) (b), (c), or (d). The invention includes drugs containing a compound of formula (I), plus the usual auxiliaries and carriers. These drugs are suitable for use in cases of carcinoma of the prostate and in endometriosis, as well as for fertility control.
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 May 22, 1992 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2014.
- 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.