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Expired Canadian patentCanada

Reduction in the virulence of mycobacterium tuberculosis and protection against tuberculosis by means of phop gene inactivation

CA 2456007 C · Owner: Universidad De Zaragoza · Inventors: Gicquel, Brigitte; Martin Montanes, Carlos; Perez Herran, Esther

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Abstract From the Canadian patent

The construction of a mutant in the phoP gene by means of homologous recombination from a clinically isolated Mycobacterium tuberculosis reduces the virulence thereof in mouse bone marrow macrophage. Moreover the phoP , mutant reduces the virulence thereof in the experimental mouse model. Said phoP mutant can persist without being eliminated both in the macrophage and in the mouse. Mice inoculated with the phoP mutant are protected against M. tuberculosis infection. The use of mutants of mycobacteria in which the phoP gene or the genes regulated by phoP have been inactivated are candidates for vaccines against human and animal tuberculosis as well as possible recombinant vaccines …

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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 30, 2002 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 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.
FiledJuly 30, 2002
GrantedOctober 8, 2013
Term endedJuly 30, 2022
Patent numberCA 2456007 C
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJuly 30, 2002Patent grantedOct 8, 2013Term endedJuly 30, 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.