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Expired Canadian patentCanada

Assay verification control for analytical methods

CA 2129368 C · Owner: Mitchell, James E. · Inventors: Clift, Gilbert; Clark, Frederic L.; Schmidt, Linda S.

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Abstract From the Canadian patent

A method for verifying that an assay methodology is properly performed that assay reagents employed possess the necessary potency for accurately performing such assay methodology and whether or , not test samples or assay reagents have been tampered with or are adulterated, is described. The method is performed by employing an assay verification sample, comprising a positive analyte component and the test sample under analysis wherein the assay, verification sample is analyzed employing the same assay reagents and essentially the same assay methodology employed to analyze the test sample. The method is particularly useful for performing heterogeneous immunoassays on an automated …

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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 24, 1993 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2015.
  • 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 24, 1993
GrantedJanuary 22, 2002
Term endedMarch 24, 2013
Patent numberCA 2129368 C
Classification (IPC)G01N33/54 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedMarch 24, 1993Patent grantedJan 22, 2002Term endedMarch 24, 2013

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