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Expired Canadian patentCanada

Cd25 binding molecules

CA 2038279 C · Owner: Cammisuli, Salvatore · Inventors: Akbar, Arne N.; Amlot, Peter L.; Cammisuli, Salvatore

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

Novel monoclonal antibodies to the CD25 antigen are characterized by the amino acid sequence of their hypervariable regions. Initially produced in murine form, they may be converted to chimeric or humanized forms, immunoconjugates or antibody fragments (generally described as binding molecules). The products are useful for the prophylaxis or treatment of transplant rejection paticularly in, combination with other antibodies to activated T-cells for example, CD7 antibodies.

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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 14, 1991 and granted March 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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 14, 1991
GrantedMarch 9, 1999
Term endedMarch 14, 2011
Patent numberCA 2038279 C
Classification (IPC)C12N15/13 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMarch 14, 1991Patent grantedMarch 9, 1999Term endedMarch 14, 2011

Sources & verification

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