Oral pharmaceutical formulation in the form of microcapsule aqueous suspension allowing modified release of active ingredient(s)
CA 2480826 C · Owner: Flamel Technologies · Inventors: Meyrueix, Remi; Castan, Catherine; Guimberteau, Florence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns liquid pharmaceutical formulations for oral delivery, with modified release of active principle(s) excluding amoxicillin and consisting of suspensions of coated particles of active principles (microcapsules). The microcapsules constituting the dispersed phase of the suspension are designed according to the invention, to enable modified release of the active principle(s) in accordance with a profile which remains unaltered during the shelf life of the liquid suspension. Therefor the invention consists in selecting a coating composition specific to the microcapsules consisting of at least four components enabling preservation of said microcapsules in water without …
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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 April 7, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 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
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.