Compositions of interferon-beta stabilized with highly purified mannitol
CA 2428144 C · Owner: Wolfe, Sidney N. · Inventors: Hora, Maninder S.; Wolfe, Sidney N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stabilized pharmaceutical formulations comprising IFN-.beta. and highly purified mannitol are provided. The highly purified mannitol stabilizes the compositions by reducing the formation of IFN-.beta. adducts in comparison with IFN-.beta. formulated with mannitol that has not been highly purified. Methods for increasing the stability of IFN-.beta. or a variant thereof in a liquid or lyophilized composition and for increasing storage stability of such a composition are also provided.
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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 November 7, 2001 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2023.
- 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.