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Expired Canadian patentCanada

(1s,2s)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol methanesulfonate trihydrate

CA 2228752 C · Owner: Sinay, Terry G. · Inventors: Andino, Marta M.; Sinay, Terry G.; Fiese, Eugene F.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention relates to the trihydrate of the mesylate salt of (1S,2S)-1- (4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol pharma-, ceutical compositions containing it and methods of using it to treat CNS disorders.

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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 June 20, 1996 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 20, 1996
GrantedDecember 10, 2002
Term endedJune 20, 2016
Patent numberCA 2228752 C
Classification (IPC)C07D211/52 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJune 20, 1996Patent grantedDec 10, 2002Term endedJune 20, 2016

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.