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Expired Canadian patentCanada

Sulfamate benzothiophene derivatives as steroid sulfatase inhibitors

CA 2525684 C · Owner: Clerc, Thierry · Inventors: Bonnet, Paule; Carniato, Denis; Duc, Igor

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

The present invention relates to sulfamate benzothiophene compounds of the formula: (I) wherein R1, R2, R3, m and n are as defined in the specification. The invention also relates to pharmaceutical compositions containing these compounds and to methods of using them.

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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 May 16, 2003 and granted January 6, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 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.
FiledMay 16, 2003
GrantedJanuary 6, 2015
Term endedMay 16, 2023
Patent numberCA 2525684 C
Classification (IPC)C07D333/54 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMay 16, 2003Patent grantedJan 6, 2015Term endedMay 16, 2023

Sources & verification

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