New effectors of dipeptidyl peptidase iv for topical use
CA 2379875 A1 · Owner: Schlenzig, Dagmar · Inventors: Hoffmann, Torsten; Schlenzig, Dagmar; Demuth, Hans-Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compounds of general formula (I) wherein A , represents an amino acid with at least one functional group in the side chain; while B is a chemical compound covalently bound to a functional group of the side chain of A, namely oligopeptide with a chain length of up to 20 amino acids with the exception of glycine homopolymers which have up to 6 glycine monomers or polyethylene glycols with molar masses of up to 20000 g/mole; C represents a thiazolidine, pyrrolidine cyanopyrrolidine, hydroxyproline, dehydroproline or piperidine group which is amide bonded. These compounds can be used to topically influence the activity of dipeptidyl Peptidase IV.
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 August 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2022.
- 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.