Expired Canadian patentCanada
Polypeptide and anti-hiv drug prepared therefrom
CA 2068327 C · Owner: Fujii, Nobutaka · Inventors: Fujii, Nobutaka; Yamamoto, Naoki
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel polypeptide having an antiviral activity against human immunodeficiency virus (HIV), represented by the above Formula (I), a pharmaceutically acceptable salt thereof and an anti-HIV drug , containing the same as the active ingredient.
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 September 10, 1991 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 1991
GrantedJanuary 1, 2002
Term endedSeptember 10, 2011
Patent numberCA 2068327 C
Classification (IPC)C07K7/08 +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.