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Expired Canadian patentCanada

System and methods for announcing and locating services in a distributed peer-to-peer network

CA 2581199 C · Owner: Cooper, Eric · Inventors: Stelzig, James Andrew; Cooper, Eric; Poustchi, Behrouz

CIPO record

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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 methods for announcing and locating services that are shared in a distributed manner within a peer-to-peer packet-based network are provided by embodiments of the invention. As opposed to every network device of the network requiring a copy of every desired service one or more network devices , maintain a copy of a particular service and the service is shared by any network device in the network that requires the service. Available services at a particular network device are registered with that network device and then service availability is announced to all other network devices on the network. Network devices maintain lists of what services are available on the network …

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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 30, 2004 and granted September 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2026.
  • 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 30, 2004
GrantedSeptember 24, 2013
Term endedSeptember 30, 2024
Patent numberCA 2581199 C
Classification (IPC)H04L67/10 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 30, 2004Patent grantedSep 24, 2013Term endedSep 30, 2024

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