Expired Canadian patentCanada
Cyclohexyl sulphones as gamma-secretase inhibitors
CA 2525841 C · Owner: Merck Sharp & Dohme Limited · Inventors: Jelley, Richard Alexander; Owens, Andrew Pate; Gibson, Karl Richard
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I): inhibit gamma-secretase and hence find use in treatment or prevention of Alzheimer's disease.
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 May 7, 2004 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.
FiledMay 7, 2004
GrantedOctober 16, 2012
Term endedMay 7, 2024
Patent numberCA 2525841 C
Classification (IPC)C07D285/16 +2 more
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.