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Expired Canadian patentCanada

Inhibitors of histone deacetylase

CA 2391952 C · Owner: Thibault, Carl · Inventors: Delorme, Daniel; Abou-Khalil, Elie; Ruel Rejean

CIPO record

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Abstract From the Canadian patent

The invention relates to the inhibition of histone deacetylase. The invention provides compounds for inhibiting histone deacetylase enzymatic activity. The compounds for inhibiting histone deacetylase enzymatic activity can be represented by the formulas Cy-L1-Ar Y1-C(O)-NH-Z , Cy-L2 Ar-Y2-C(O)NH-Z Cy-L3 Ar-Y3-C(O)NH-Z, wherein Cy, L1, L2 L3, Ar, Y1, Y2, Y3 and Z are as defined in the application.

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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 22, 2000 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
  • 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 22, 2000
GrantedJanuary 31, 2012
Term endedNovember 22, 2020
Patent numberCA 2391952 C
Classification (IPC)C07C311/21 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedNov 22, 2000Patent grantedJan 31, 2012Term endedNov 22, 2020

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