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Expired Canadian patentCanada

On-demand digital asset management and distribution method and system

CA 2553258 C · Owner: Comcast Cable Communications, Llc · Inventors: Michel, Walter F.

CIPO record

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Abstract From the Canadian patent

A content distribution network includes a central content management system that acquires digital assets for distribution over the network to on-demand serving locations for on-demand delivery to customers. A digital asset includes a package of files. The files are processed prior to distribution from the central content management system to provide trick mode support. The content distribution network distributes the processed files from the central content management system to the serving locations. A method includes breaking up the digital asset at the central content management system into chunks utilizing a pipelined distribution process between the central content management …

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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, 2005 and granted October 31, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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, 2005
GrantedOctober 31, 2017
Term endedJanuary 12, 2025
Patent numberCA 2553258 C
Classification (IPC)H04H20/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 12, 2005Patent grantedOct 31, 2017Term endedJan 12, 2025

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