Approach for tracking data
CA 2424331 C · Owner: Yahoo!! Inc. · Inventors: Littlefield, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tracking data in accordance with an embodiment of the invention generally involves determining whether data supplied by an intermediary includes rights data, such as a watermark, that indicates ownership rights in the data. If the data supplied by the intermediary includes rights data then a record is , generated that indicates that the intermediary supplied data contains rights data. The intermediary may also record the source and destination of data passing through the intermediary. In addition the intermediary may , dynamically update rights data to indicate a source destination or path of , data passing through the intermediary. The intermediary may also generate statistical …
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 October 30, 2001 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2023.
- 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.