Retroviral protease inhibiting compounds
CA 2017252 C · Owner: Kempf, Dale J. · Inventors: Kempf, Dale J.; Plattner, Jacob J.; Codacovi, Lynn M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retroviral protease inhibiting compound of the formula, A-X-B, or a pharmaceutically acceptable salt prodrug or ester, thereof, wherein X is a linking group; A is, (1) substituted amino, (2) substituted carbonyl (3) functionalized imino, (4) functionalized alkyl (5) functionalized acyl, (6) functionalized heterocyclic or (7) functionalized (heterocyclic)alkyl; and B is, (1) substituted carbonyl independently defined as herein, (2) substituted amino independently defined as herein -332-, (3) functionalized imino independently defined as herein, (4) functionalized alkyl independently defined as herein, (5) functionalized acyl independently defined as herein, (6) functionalized heterocyclic …
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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 May 22, 1990 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2012.
- 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.