Use of hydroxychloroquine for treatment of graft-versus-host disease
CA 2134413 C · Owner: The Georgetown University · Inventors: Gilman, Andrew L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a pharmaceutical composition for treating graft-versus-host disease comprising an effective amount of hydroxychloroquine in admixture with a pharmaceutically acceptable carrier or diluent. Also disclosed is a pharmaceutical composition for suppressing alloreactivity arising from reactions of donor T lymphocytes against recipient cells comprising an amount of hydroxychloroquine effective to suppress such alloreactivity, in admixture with a pharmaceutically acceptable carrier or diluent.
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 26, 1994 and granted February 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 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.