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Expired Canadian patentCanada

System for deriving relative physiologic signals

CA 2324316 C · Owner: Medtronic, Inc. · Inventors: Goedeke, Steven D.

CIPO record

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Abstract From the Canadian patent

A patient monitoring and/or therapy delivery system and method employing an implantable medical device for sensing absolute physiologic signal values within the body of a patient, e.g. absolute blood pressure temperature, etc. and an external monitoring device for monitoring and conveying ambient signal values to the implantable medical device wherein the absolute , physiologic signal values and the ambient signal values are combined to derive relative physiologic signal values for storage and/or control of a therapy provided by the implantable medical device. In the context of an implantable physiologic monitor, the relative and optionally the absolute and/or ambient , physiologic …

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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 February 10, 1999 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 10, 1999
GrantedDecember 16, 2003
Term endedFebruary 10, 2019
Patent numberCA 2324316 C
Classification (IPC)A61N1/36 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedFeb 10, 1999Patent grantedDec 16, 2003Term endedFeb 10, 2019

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