6-piperazinyl-1h-pyrazolo¬3,4-b pyridine-3-carboxylic acids, esters, amides and related compounds, a process for their preparation and their use as medicaments
CA 2125103 C · Owner: Aventis Pharmaceuticals Inc. · Inventors: Shutske, Gregory M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
6-Piperazinyl-1H-pyrazolo3,4-b)pyridine-3-carboxylic Acids Esters, Amides , and, related compounds a process for their preparation and their use as medicaments, There are disclosed various compounds of the formula below where the parameters n, R1, R2 and X are as defined in the specification which are, selective inhibitors of the reuptake of the serotonin and as such are useful for the, treatment of depression and obsessive compulsive disorder. There is also disclosed, a process for the preparation of the above compounds.
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 3, 1994 and granted September 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2016.
- 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.