Method of administering a compound to multi-drug resistant cells
CA 2353593 A1 · Owner: Hadasit Medical Research Services & Development Ltd. · Inventors: Zalipsky, Samuel; Goren-Rubel, Dorit; Gabizon, Alberto A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for administration of a therapeutic compound to a multi-drug resistant cell in a person suffering from a drug-resistant cancer is described. The composition is composed of a carrier molecule and a folate targeting ligand, which is covalently attached to the carrier and the , therapeutic compound. In one preferred embodiment the carrier is a liposome , having a surface coating of hydrophilic polymer chains where a folate ligand is attached to the free distal end of at least a portion of the hydrophilic polymer chains, and the therapeutic agent is entrapped in the liposomes. The composition is effective to achieve accumulation of the therapeutic compound in the cell in an …
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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 December 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2021.
- 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.