Soluble prodrugs of paclitaxel
CA 2294606 A1 · Owner: Baker Norton Pharmaceuticals, Inc. · Inventors: Kortright, Kenneth H.; Digenis, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 2'-onium salts of paclitaxel act as prodrugs in mammalian patients to yield paclitaxel in vivo. Methods of synthesizing these onium salts are disclosed, as are methods of treating patients suffering from paclitaxelresponsive diseases by administering effective amounts of the onium salts and pharmaceutical compositions containing the novel salts which are suitable for administration to patients requiring paclitaxel therapy.
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 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 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.