Expired Canadian patentCanada
Protective agent against reinfection after liver transplantation
CA 2405547 C · Owner: Kawashima, Yoshiharu · Inventors: Kawashima, Yoshiharu; Ichida, Takafumi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Reinfection with the hepatitis C virus after liver transplantation is protected by administering IFN-.beta. before liver transplantation, and thus IFN-.beta. is useful as a reinfection protecting agent.
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 April 20, 2001 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 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.
FiledApril 20, 2001
GrantedJune 21, 2011
Term endedApril 20, 2021
Patent numberCA 2405547 C
Classification (IPC)A61K38/21 +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.