Hiv protease inhibitors
CA 2173328 C · Owner: Fritz, James E. · Inventors: Shepherd, Timothy A.; Tatlock, John H.; Hornback, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
HIV protease inhibitors, obtainable by chemical synthesis inhibit or block the biological activity of the HIV protease enzyme causing, the replication of the HIV virus to terminate. These compounds as well as pharmaceutical compositions that contain these compounds and optionally other anti-viral agents as active ingredients are suitable for treating patients or hosts infected with the HIV virus which is, known to cause AIDS.
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 October 7, 1994 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2016.
- 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.