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Expired Canadian patentCanada

Methods for the treatment of demyelinating disease, uveitis, or graft-versus-host disease

CA 2037831 C · Owner: Hayashi, Hiroshi · Inventors: Hori, Kazuyoshi; Otsuka, Yoshiki; Hayashi, Hiroshi

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A pharmaceutical composition and a method for its use in the treatment of severe chronic inflammatory diseases such, as demyelinatig disease, uveitis and graft-versus-host disease are provided. The composition comprises tumor necrosis factor as an active ingredient and at least one pharmaceutically acceptable carrier, diluent or excipient.

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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 March 8, 1991 and granted January 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1991
GrantedJanuary 21, 1997
Term endedMarch 8, 2011
Patent numberCA 2037831 C
Classification (IPC)A61K38/19

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMarch 8, 1991Patent grantedJan 21, 1997Term endedMarch 8, 2011

Sources & verification

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