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Expired Canadian patentCanada

Peer-to-peer name resolution wire protocol and message format data structure for use therein

CA 2465997 C · Owner: Simionescu, Radu · Inventors: Miller, John L.; Rawas, Henry; Lieuallen, Brian

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Abstract From the Canadian patent

An extensible data structure for messages in a peer to peer name resolution protocol is presented. This message data structure utilizes a number of fields each containing a message element. Preferably the first field is the message header that includes protocol information and identifies the type of message. Each message element contains a number of fields. These message element fields include a type field a length field, and the content or payload of the message element. In one embodiment at least ten messages are formed for proper operation of a Peer To Peer Name Resolution Protocol (PNRP) including RESOLVE, RESPONSE, SOLICIT, ADVERTISE REQUEST, FLOOD, INQUIRE, AUTHORITY, ACK and REPAIR …

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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 May 3, 2004 and granted February 23, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 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.
FiledMay 3, 2004
GrantedFebruary 23, 2016
Term endedMay 3, 2024
Patent numberCA 2465997 C
Classification (IPC)H04L61/45 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 3, 2004Patent grantedFeb 23, 2016Term endedMay 3, 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.