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Expired Canadian patentCanada

Inhibitors of urokinase, their preparation and use

CA 2478409 C · Owner: Schweinitz, Andrea · Inventors: Stuerzebecher, Joerg; Schweinitz, Andrea; Steinmetzer, Torsten

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

The invention relates to novel inhibitors of urokinase of general formula (I):, (see formula I) and to their preparation and use for the therapy prophylaxis and diagnosis of a tumor, in particular for reducing the formation of tumor metastases.

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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 11, 2003 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 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.
FiledMarch 11, 2003
GrantedJuly 31, 2012
Term endedMarch 11, 2023
Patent numberCA 2478409 C
Classification (IPC)C07C233/00 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMarch 11, 2003Patent grantedJuly 31, 2012Term endedMarch 11, 2023

Sources & verification

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