Fused pyridine derivatives for use as vanilloid receptor antagonists for treating pain
CA 2441599 A1 · Owner: Zimmermann, Kaspar · Inventors: Gull, Peter; Kim, Hong-Yong; Liu, Yugang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides compounds of formula (I) wherein R1 R2, R3, R4 and R5 , are as defined in the description and the preparation thereof. The compounds of formula I are functional blockers of the human vanilloid receptor 1 (hVR1) and are useful as pharmaceuticals; in particular for treating pain.
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 March 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2024.
- 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.