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Expired Canadian patentCanada

System and method for using a window mechanism to control multicast data congestion

CA 2249034 C · Owner: Sabnani, Krishan Kumar · Inventors: Sabnani, Krishan Kumar; Golestani, S. Jamaloddin

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Abstract From the Canadian patent

A system and method for using a window mechanism to control transmission of a multicast in a computer network to curb congestion. In one embodiment, the system includes: (1) a packet monitor that tracks for each, receiver of the multicast, unacknowledged packets transmitted to each receiver and (2) a multicast manager associated with the packet monitor, that controls transmission of further packets of the multicast to prevent the unacknowledged packets transmitted to any of each receiver from exceeding a maximum number associated with each receiver.

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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 29, 1998 and granted April 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 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.
FiledSeptember 29, 1998
GrantedApril 15, 2003
Term endedSeptember 29, 2018
Patent numberCA 2249034 C
Classification (IPC)H04L12/56 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedSep 29, 1998Patent grantedApril 15, 2003Term endedSep 29, 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.