A simplified and improved method for preparing an antibody or an antibody fragment targeted immunoliposome or polyplex for systemic administration of a therapeutic or diagnostic agent
CA 2442533 C · Owner: Chang, Esther H. · Inventors: Chang, Esther H.; Pirollo, Kathleen F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing an antibody- or antibody fragment-targeted cationic immunoliposome or polymer complex comprises the steps of (a) preparing an antibody or antibody fragment; (b) mixing said antibody or antibody fragment with a cationic liposome to form a cationic immunoliposome or with a cationic polymer to form a polyplex; and (c) mixing said cationic immunoliposome or said polyplex with a therapeutic or diagnostic agent to form said antibody- or antibody fragment-targeted cationic immunoliposome or polymer complex.
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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 2, 2002 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2024.
- 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.