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Expired Canadian patentCanada

Compensating for inadequate sample volume in biosensor devices

CA 2838176 C · Owner: Lifescan, Inc. · Inventors: Guo, Sherry X.; Teodorczyk, Maria; Kermani, Mahyar Z.

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Abstract From the Canadian patent

Methods and systems are provided for determining whether a volume of biological sample is adequate to produce an accurate electrochemical analyte concentration measurement and compensating for a sample volume determined to be less than adequate in order to proceed with an accurate analyte concentration measurement. The present invention is employed with a biosensor such as an electrochemical test strip to which the sample volume of biological solution is deposited and a meter configured to receive such test strip and to measure the concentration of selected analytes within the biological sample.

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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 October 9, 2002 and granted September 6, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 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.
FiledOctober 9, 2002
GrantedSeptember 6, 2016
Term endedOctober 9, 2022
Patent numberCA 2838176 C
Classification (IPC)G01N27/41 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedOct 9, 2002Patent grantedSep 6, 2016Term endedOct 9, 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.