Expired Canadian patentCanada
Compounds and methods for the treatment or prevention of flavivirus infections
CA 2449999 C · Owner: Chan Chun Kong, Laval · Inventors: Siddiqui, M. Arshad; Wang, Wuyi; Chan Chun Kong, Laval
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
the present invention provides novel compounds represented by formula I: or pharmaceutically acceptable salts thereof useful for treating Flaviviridae viral infection.
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 11, 2002 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 2002
GrantedJuly 31, 2012
Term endedJune 11, 2022
Patent numberCA 2449999 C
Classification (IPC)C07D277/28 +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.