Pharmaceutical formulation comprising cyclosporin, propylene glycol ester and non-ionic surfactant
CA 2494796 C · Owner: Patel, Satishchandra Punambhai · Inventors: Patel, Satishchandra Punambhai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The application discloses a pharmaceutical composition suitable for oral administration in the form of a homogeneous solution which on exposure to water or gastrointestinal fluids forms an emulsion having a particle size of less than 5 microns, the solution comprising: (a) a pharmaceutically effective amount of a cyclosporin, in particular Cyclosporin A (b) a carrier medium , comprising a mixture of mono-and diesters of propylene glycol with fatty acids having from 8 to 10 carbon atoms or with mixtures of such fatty acids wherein , the monoester makes up less than 60mol% of the mixture and (c) a non-ionic , surfactant having a hydrophilic lipophilic balance (HLB) greater than 10.
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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 July 31, 2003 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2025.
- 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
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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.