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Expired Canadian patentCanada

Optical sensor for in situ measurement of analytes

CA 2425337 C · Owner: Petersson, Bo · Inventors: Petersson, Bo; Weber, Anders

CIPO record

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Abstract From the Canadian patent

An implantable sensor for use in the detection or quantitative measurement of an analyte in subcutaneous fluid, the sensor being biodegradable or hydrolysable in vivo. The sensor incorporates an assay for the analyte the , readout of which is a detectable or measurement optical signal which can when , the sensor is in operation in a subcutaneous location be interrogated , transcutaneously by external optical means.

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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 12, 2001 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2023.
  • 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 12, 2001
GrantedJanuary 10, 2012
Term endedOctober 12, 2021
Patent numberCA 2425337 C
Classification (IPC)A61B5/00 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedOct 12, 2001Patent grantedJan 10, 2012Term endedOct 12, 2021

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