Hiv protease inhibitors
CA 2036413 C · Owner: Rakhit, Sumanas · Inventors: Rakhit, Sumanas; Yoakim, Christiane; Anderson, Paul Cates
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are compounds of the general formula X-A-B-Y wherein X is R1OC(O), R1NHC(O) or R1C(O) wherein R1 is for, example, alkyl, optionally substituted phenyl or optionally substituted benzyl, A is a non-peptide linking unit e.g. statyl or, Phe~CH2NHLeu, B is an amino acid residue of glutamic acid or a related derivative thereof, and Y is alkoxy cycloalkoxy, a, substituted alkoxy or a substituted amino group e.g. cycloalkyl-alkoxy, aralkoxy, alkylamino (cycloalkyl)alkylamino or aralkylamino. The compounds inhibit the activity of human immunodeficiency virus (HIV) protease and interfere with HIV induced cytopathogenic effects in human cells. These properties render the compounds …
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 February 15, 1991 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 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.
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.