Expired Canadian patentCanada
Serine protease inhibitors
CA 2436935 C · Owner: Farthing, Christopher Neil · Inventors: Waszkowycz, Bohdan; Harrison, Martin James; Naylor, Neil Jason
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 where R5, R6a, each X L, Cy and Lp are as defined in , the specification are tryptase inhibitors useful as anti-inflammatory agents.
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 December 12, 2001 and granted May 10, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 12, 2001
GrantedMay 10, 2011
Term endedDecember 12, 2021
Patent numberCA 2436935 C
Classification (IPC)C07D333/78 +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.