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Expired Canadian patentCanada

Antibody against secreted n-terminal peptide of gpc3 present in blood or c-terminal peptide of gpc3

CA 2497744 C · Owner: Nakano, Kiyotaka · Inventors: Nakano, Kiyotaka; Tokita, Susumu; Aburatani, Hiroyuki

CIPO record

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

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Abstract From the Canadian patent

Disclosed is an antibody against a secreted form of GPC3 capable of detecting a secreted form of glypican 3 (GPC3) in a test sample. It is possible to determine whether a subject suffers from cancer, in particular hepatoma. Also disclosed is an antibody against GPC as well as a cell disrupting agent and an anti-cancer agent comprising the same which can disrupt, cells, in particular cancer cells.

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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 September 4, 2003 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 4, 2003
GrantedMarch 12, 2013
Term endedSeptember 4, 2023
Patent numberCA 2497744 C
Classification (IPC)C07K16/18 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedSep 4, 2003Patent grantedMarch 12, 2013Term endedSep 4, 2023

Sources & verification

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