Sugar stabilized antibody-containing solution formulations
CA 2474943 C · Owner: Chugai Seiyaku Kabushiki Kaisha · Inventors: Kikuchi, Jun; Mizushima, Hidefumi; Imaeda, Yoshimi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is an antibody-containing solution formulation comprising a sugar and a surfactant as stabilizers. The sugar is sucrose or trehalose whereas , the surfactant is Polysorbate 80 or 20. The antibody to be stabilized with the solution formulation is a humanized anti-interleukin-6 receptor antibody hPM-1 or the anti-HM1.24 antibody. The solution formulation prevents antibody multimer molecule formation induced by light.
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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 February 14, 2003 and granted June 7, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 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.