Patent Yard Sign in
Expired Canadian patentCanada

Secure media path methods, systems, and architecture

CA 2428953 C · Owner: Evans, Glenn F. · Inventors: Bradstreet, John; Evans, Glenn F.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Methods, systems and architectures for processing renderable digital content are described. The various embodiments can protect against unauthorized access or duplication of unprotected content (i.e. decrypted content) once the content has reached a rendering device such as a user's computer. A flexible framework includes an architecture that allows for general media sources to provide virtually any type of multimedia content to any suitably configured rendering device. Content can be protected and rendered locally and/or across networks such as the Internet. The inventive architecture can allow third parties to write components and for the components to be securely and flexibly …

Read the whole patent

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 20, 2003 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2025.
  • 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 20, 2003
GrantedJuly 16, 2013
Term endedMay 20, 2023
Patent numberCA 2428953 C
Classification (IPC)H04L9/32 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMay 20, 2003Patent grantedJuly 16, 2013Term endedMay 20, 2023

Sources & verification

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