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Expired Canadian patentCanada

Novel ligands that are antagonists of rar receptors, process for preparing them and use thereof in human medicine and in cosmetics

CA 2505286 C · Owner: Raffin, Catherine · Inventors: Diaz, Philippe; Biadatti, Thibaud; Raffin, Catherine

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 invention relates to novel compounds corresponding to formula (I) below: and to the method for preparing them, and to their use in pharmaceutical compositions intended for use in human or veterinary medicine or , alternatively in cosmetic compositions.

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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 November 18, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.
FiledNovember 18, 2003
GrantedFebruary 7, 2012
Term endedNovember 18, 2023
Patent numberCA 2505286 C
Classification (IPC)C07C391/02 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedNov 18, 2003Patent grantedFeb 7, 2012Term endedNov 18, 2023

Sources & verification

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