Expired Canadian patentCanada
Phosphonooxymethyl ethers of taxane derivatives
CA 2111527 C · Owner: Kadow, John F. · Inventors: Wong, Henry; Golik, Jerzy; Li, Wen-Sen
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns novel water-soluble phosphonooxymethyl ethers of taxane derivatives their, use as antitumor agents, and pharmaceutical compositions containing the novel compounds.
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 December 15, 1993 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1993
GrantedJuly 18, 2000
Term endedDecember 15, 2013
Patent numberCA 2111527 C
Classification (IPC)C07F9/54 +2 more
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.