Expired Canadian patentCanada
Polypeptide inducing hiv-neutralising antibodies
CA 2431881 C · Owner: Chevalier, Michel · Inventors: Chevalier, Michel; Sodoyer, Regis; Charloteaux, Benoit
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 invention concerns a polypeptide capable of forming a structure corresponding or analogous to the intermediate state of gp41 and its use in a vaccine for preventing and treating HIV-mediated infections.
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 January 4, 2002 and granted February 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 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.
FiledJanuary 4, 2002
GrantedFebruary 22, 2011
Term endedJanuary 4, 2022
Patent numberCA 2431881 C
Classification (IPC)C12N15/48 +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.