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Expired Canadian patentCanada

2,4-pyrimidinediamine compounds and their uses

CA 2474277 C · Owner: Molineaux, Susan · Inventors: Bhamidipati, Somasekhar; Argade, Ankush; Molineaux, Susan

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Abstract From the Canadian patent

The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compunds in a variety of contexts including in the , treatment and prevention of diseases characterized by caused by or associated , with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.

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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 January 31, 2003 and granted September 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.
FiledJanuary 31, 2003
GrantedSeptember 24, 2013
Term endedJanuary 31, 2023
Patent numberCA 2474277 C
Classification (IPC)C07D239/28 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJan 31, 2003Patent grantedSep 24, 2013Term endedJan 31, 2023

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