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Expired Canadian patentCanada

Curvilinear electrode and method for forming lesions

CA 2174131 C · Owner: Ep Technologies, Inc. · Inventors: Bourne, Thomas; Panescu, Dorin; Swanson, David K.

CIPO record

Overview

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

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Abstract From the Canadian patent

Systems and associated methods form larger and deeper lesion patterns by shaping a support body with multiple electrodes in ways that increase the density of the electrodes per given tissue area. The support body can carry either elongated, continuous electrodes or arrays of non-contiguous segmented electrodes.

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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 14, 1994 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2016.
  • 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 14, 1994
GrantedJuly 31, 2001
Term endedOctober 14, 2014
Patent numberCA 2174131 C
Classification (IPC)A61N5/02 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedOct 14, 1994Patent grantedJuly 31, 2001Term endedOct 14, 2014

Sources & verification

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