Expired Canadian patentCanada
Monohydrate of (e)-2'-deoxy-2'-(fluoromethylene)cytidine
CA 2179987 C · Owner: Donaldson, Richard E. · Inventors: Donaldson, Richard E.
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 relates to the novel monohydrate or (E)-2' deoxy-2'-(fluoromethylene)cytidine useful as a ribonucleotide reductase inhibitor in the treatment of patients afflicted with neoplastic or viral disease states.
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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 13, 1994 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2016.
- 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 13, 1994
GrantedJanuary 19, 1999
Term endedDecember 13, 2014
Patent numberCA 2179987 C
Classification (IPC)C07H19/07 +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.