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Expired Canadian patentCanada

Anti tubercular drug: compositions and methods

CA 2485592 C · Owner: Lee, Richard Edward · Inventors: Lee, Richard Edward; Slayden, Richard Allan; Protopopova, Marina Nikolaevna

CIPO record

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Abstract From the Canadian patent

Methods and compositions for treating disease caused by infectious agents particularly tuberculosis. In particular methods and compositions comprising , substituted ethylene diamines for the treatment of infectious diseases are provided. In one embodiment, these methods and compositions are used for the treatment of mycobacterial infections, including but not limited to, tuberculosis.

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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 May 19, 2003 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 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.
FiledMay 19, 2003
GrantedJuly 16, 2013
Term endedMay 19, 2023
Patent numberCA 2485592 C
Classification (IPC)A61K31/13 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMay 19, 2003Patent grantedJuly 16, 2013Term endedMay 19, 2023

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