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Expired Canadian patentCanada

Cancer treatment methods using therapeutic conjugates that bind to aminophospholipids

CA 2331789 C · Owner: Brekken, Rolf A. · Inventors: Thorpe, Philip E.; Ran, Sophia; Brekken, Rolf A.

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Abstract From the Canadian patent

Disclosed is the surprising discovery that aminophospholipids such as , phosphatidylserine and phosphatidylethanolamine are specific, accessible and stable markers of the luminal surface of tumor blood vessels. The present invention thus provides aminophospholipid-targeted diagnostic and therapeutic constructs for use in tumor intervention. Antibodytherapeutic agent conjugates and constructs that bind to aminophospholipids are particularly provided as are methods of specifically , delivering therapeutic agents including toxins and coagulants, to the stably-expressed aminophospholipids of tumor blood vessels thereby , inducing thrombosis, necrosis and tumor regression.

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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 July 12, 1999 and granted September 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 12, 1999
GrantedSeptember 10, 2013
Term endedJuly 12, 2019
Patent numberCA 2331789 C
Classification (IPC)A61K51/10 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedJuly 12, 1999Patent grantedSep 10, 2013Term endedJuly 12, 2019

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