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Expired Canadian patentCanada

Assay to determine efficacy of treatment for m. tuberculosis infection

CA 2433236 C · Owner: Lalvani, Ajit · Inventors: Lalvani, Ajit

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Method of determining the efficacy of treatment for mycobacterial infection in an individual comprising determining in samples from the individual whether the level of T cells specific for a mycobacterial antigen has decreased after the treatment, thereby determining the efficacy of the treatment.

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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 January 8, 2002 and granted October 4, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 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.
FiledJanuary 8, 2002
GrantedOctober 4, 2016
Term endedJanuary 8, 2022
Patent numberCA 2433236 C
Classification (IPC)G01N33/56 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJan 8, 2002Patent grantedOct 4, 2016Term endedJan 8, 2022

Sources & verification

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