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Expired Canadian patentCanada

Epitope-bearing major histocompatibility complex class ii element/immunoglobulin chimeric molecules

CA 2301709 C · Owner: Bona, Constantin · Inventors: Bona, Constantin; Brumeanu, Teodor Doru; Casares, Sofia

CIPO record

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Abstract From the Canadian patent

The present invention relates to immunologically active molecules comprising an epitope of interest, more than one major histocompatibility complex class II element and an immunoglobulin constant , region element wherein the epitope is comprised in a fusion protein which comprises a major histocompatibility class II element wherein , each major histocompatibility class II element comprises two non-covalently associated chains comprising extracellular domains of a major histocompatibility complex class II protein and wherein the , major histocompatibility class II elements are covalently joined by one or more disulfide linkages present in the immunoglobulin constant region element. …

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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 4, 1997 and granted March 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2019.
  • 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 4, 1997
GrantedMarch 1, 2011
Term endedNovember 4, 2017
Patent numberCA 2301709 C
Classification (IPC)C07K14/74 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedNov 4, 1997Patent grantedMarch 1, 2011Term endedNov 4, 2017

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