Camptothecin-carboxylate formulations
CA 2489555 A1 · Owner: Schulze, Brita · Inventors: Teifel, Michael; Sauer, Birgitta; Haas, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compositions particularly colloidal , nanoaggregates comprising the carboxylate form of a campothecin drug or a derivative thereof associated with at least one organic cationic molecule which has a positive net charge. The composition or nanoaggregate may be present as an emulsion, droplet, mincelle liposome, nanoparticle or , nanocapsule.
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 June 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 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.