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Expired Canadian patentCanada

4-chromanone derivatives for treating cellular proliferative diseases and disorders

CA 2482041 C · Owner: Brook, Christopher S. · Inventors: Mcdonald, Andrew; Feng, Bainian; Newlander, Kenneth A.

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

Compounds useful for treating cellular proliferative diseases and disorders by modulating the activity of KSP are disclosed. For example the following , compound is , disclosed herein with substituents being defined in the description: (see above formula)

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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 April 11, 2003 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.
FiledApril 11, 2003
GrantedJune 5, 2012
Term endedApril 11, 2023
Patent numberCA 2482041 C
Classification (IPC)C07D233/02 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 11, 2003Patent grantedJune 5, 2012Term endedApril 11, 2023

Sources & verification

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