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Expired Canadian patentCanada

Client server networks

CA 2459575 C · Owner: Marconi Communications Limited · Inventors: Martin, Stephen Ian

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A client node in a network communicates with a server system comprising a plurality of servers. The client comprises a distributor which periodically measures server activity, assesses relative loading of the servers and adjusts the request distribution, and therefore the server loadings in accordance with the loading assessment.

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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 September 18, 2002 and granted July 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 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.
FiledSeptember 18, 2002
GrantedJuly 24, 2012
Term endedSeptember 18, 2022
Patent numberCA 2459575 C
Classification (IPC)H04L67/10 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 18, 2002Patent grantedJuly 24, 2012Term endedSep 18, 2022

Sources & verification

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