Liposomal cyclosporin formulation and process for the preparation thereof
CA 2108288 C · Owner: Vestar, Inc. · Inventors: Ernst, William A.; Adler-Moore, Jill P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing a liposomal cyclosporin therapeutic formulation which , comprises dissolving a combination of a neutral and negatively charged phospholipid and a cyclosporin in an organic solvent; drying the solution to form a solid phase and hydrating the solid phase in an aqueous solution having a pH ranging from 5.5 to 9.5.
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 April 20, 1992 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2014.
- 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.