Pyrrolo-pyridine derivatives
CA 2116213 A1 · Owner: Smith, Adrian L. · Inventors: Leeson, Paul D.; Ridgill, Mark P.; Smith, Adrian L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A class of pyrrolo2,3-bpyridine derivatives substituted at the 3-position by a substituted piperazinylmethyl moiety, are antagonists of dopamine receptor subtypes within the brain, having a selective affinity for the dopamine D4 receptor subtype over other dopamine receptor subtypes, and are accordingly of benefit in the treatment and/or prevention of psychotic disorders such as schizophrenia whilst manifesting fewer side-effects than those associated with classical neuroleptic drugs.
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 February 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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.