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Expired Canadian patentCanada

Immunosuppressant compounds and compositions

CA 2524048 C · Owner: Gray, Nathanael S. · Inventors: Pan, Shifeng; Gao, Wenqi; Gray, Nathanael S.

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 immunosuppressant process for their , production, their uses and pharmaceutical compositions containing them. The invention provides a novel class of compounds useful in the treatment or prevention of diseases or disorders mediated by lymphocyte interactions particularly diseases associated with EDG receptor mediated signal transduction.

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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 19, 2004 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2026.
  • 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 19, 2004
GrantedJune 25, 2013
Term endedMay 19, 2024
Patent numberCA 2524048 C
Classification (IPC)C07D333/54 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 19, 2004Patent grantedJune 25, 2013Term endedMay 19, 2024

Sources & verification

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