Cyclopeptides, a method of preparing them, and their use as drugs
CA 2089747 A1 · Owner: Boehringer Ingelheim International Gmbh · Inventors: Schnorrenberg, Gerd; Heinrichs, Stefan; Palluk, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The invention relates to cyclopeptides of general formula, (I), and their salts, wherein the amino acid groups An to Kn have the meanings given in the specification and the, preparation and use thereof. The new compounds are ANPagonists.
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 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2013.
- 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.