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Expired Canadian patentCanada

Method of preventing or reducing eosinophilia

CA 2002144 C · Owner: Dnax Research Institute Of Molecular And Cellular Biology Inc. · Inventors: Rennick, Donna M.; Coffman, Robert L.

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

A method of preventing or reducing eosinophilia associated with certain immune disorders is provided. The method comprises administering an effective amount of an antagonist to human interleukin-5. Preferably the, antagonist is a blocking monoclonal antibody specific for human interleukin-5, or a fragment or binding composition derived therefrom.

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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 2, 1989 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2011.
  • 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 2, 1989
GrantedMarch 28, 2000
Term endedNovember 2, 2009
Patent numberCA 2002144 C
Classification (IPC)A61K39/39 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 2, 1989Patent grantedMarch 28, 2000Term endedNov 2, 2009

Sources & verification

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