Guanidinyl heterocycle compounds useful as alpha-2 adrenoceptor agonists
CA 2272640 C · Owner: The Procter & Gamble Company · Inventors: Bogdan, Sophie Eva; Henry, Raymond Todd; Sheldon, Russell James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention involves compounds having structure (I) as described in the Claims; and enantiomers, optical isomers stereoisomers, diastereomers, tautomers addition salts, biohydrolyzables amides and esters thereof as well , as pharmaceutical compositions comprising such novel compounds. The invention also relates to the use of such compounds for preventing or treating disorders modulated by alpha-2 adrenoceptors.
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 November 21, 1997 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2019.
- 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.