Immunoliposomes that optimize internalization into target cells
CA 2249352 C · Owner: Park, John W. · Inventors: Benz, Christopher C.; Kirpotin, Dmitri; Park, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides for immunoliposomes that optimizes internalization of a drug into target cells bearing a characteristic cell surface marker. The immunoliposomes comprise a Fab' domain of an antibody that specifically binds the characteristic marker an amphipathic vesicle-forming , lipid and a polyethylene glycol derivatized lipid. The invention also provides for growth-inhibiting immunoliposomes that lack growth-inhibiting therapeutic agents and yet are capable of inhibiting the growth and proliferation of target cells.
Read the whole patent
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 1, 1997 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2019.
- 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.