Systems and methods for the prevention of unauthorized use and manipulation of digital content
CA 2446584 A1 · Owner: Sca Ipla Holdings Inc. · Inventors: Lee, Andrew R.; Bouza, Jose L.; Goldman, Daniel M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A number of systems and methods, alone or in combination, achieve various , levels of protection against unauthorized modification and distribution of digital content. This encompasses at least unauthorized study modification, monitoring, reconstruction and any other means for subversion from the originally intended purpose and license model of the digital content. The invention combines a number of techniques that in whole or in part, serve to , protect such content from unauthorized modification reconstructive , engineering, or monitoring by third parties. This is accomplished by means of methods which protect against subversion by specific tools operating on specific platforms as …
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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 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.