Pyrido2,1-a-isoquinoline derivatives as dpp-iv inhibitors
CA 2529443 C · Owner: Narquizian, Robert · Inventors: Narquizian, Robert; Mattei, Patrizio; Kuhn, Bernd
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 compounds of formula (I) wherein R1 R2 R3 , and R4 are as defined in the description and claims and pharmaceutically , acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with DPP-IV such as diabetes, particularly non-insulin dependent diabetes mellitus and impaired glucose , tolerance.
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 June 11, 2004 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2026.
- 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.