A method and system of re-sharing files with modifications
CA 2398761 A1 · Owner: Bowman, Don · Inventors: Bowman, Don
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention discloses a method and system for dynamically modifying files in a shared file network such as Peer to Peer network. Files may be modified by inserting advertising into the file before passing it on to the end user. Files may be modified to create audible artifacts thus making them less likely to be copied by an end user. The audible artifacts may be removed should the user pay a licensing fee for the file. Files may also be modified to add digital rights management information so that the file may not be utilized without the appropriate key. Files may also be modified by inserting tracking information to include such information as the date of download and the IP address of …
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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 August 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.