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Expired Canadian patentCanada

Method and apparatus to establish a tap-point in a switched network

CA 2277382 C · Owner: Len, Theodore C. · Inventors: Len, Theodore C.; Yanacek, Judith A.; Clements, Bruce G.

CIPO record

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Abstract From the Canadian patent

A method and apparatus for monitoring data sent between a source node and destination node in a switched network wherein the switches configure , themselves to establish a connection path to a probe switch to receive the monitored data. The source and destination are identified along with the probe switch. An originating switch on a path between the source and destination is identified and connections between the originating switch and the probe switch are established. The originating switch sends out a first message and when the probe switch receives the first message it returns a second message to the , originating switch. Each switch between the originating switch and the probe …

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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 January 12, 1998 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 1998
GrantedMarch 18, 2003
Term endedJanuary 12, 2018
Patent numberCA 2277382 C
Classification (IPC)H04L12/26 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJan 12, 1998Patent grantedMarch 18, 2003Term endedJan 12, 2018

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