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Expired Canadian patentCanada

Methods and compositions to determine the chemosensitizing dose of suramin used in combination therapy

CA 2461227 C · Owner: Wientjes, M. Guillaume · Inventors: Wientjes, M. Guillaume; Au, Jessie L.-S

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Abstract From the Canadian patent

A method for determining a therapeutically effective amount of suramin for administering to a patient, who is to receive a cytotoxic agent which , comprises the steps of determining the circulating suramin concentration in the patient; administering suramin, if required to establish a low , circulating concentration of suramin in the patient of below about 200 ~M; and administering the chemotherapeutic agent to the patient when the low circulating concentration of suramin is present in the patient. Conveniently a nomogram can be constructed for use in clinical settings with the suramin.

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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 24, 2002 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2024.
  • 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 24, 2002
GrantedMay 15, 2012
Term endedSeptember 24, 2022
Patent numberCA 2461227 C
Classification (IPC)A61K31/17 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 24, 2002Patent grantedMay 15, 2012Term endedSep 24, 2022

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