Method and system for providing annotations of a digital work
CA 2594573 C · Owner: Manber, Udi · Inventors: Leblang, Jonathan; Manber, Udi; Siegel, Hilliard B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and systems for receiving and distributing annotations of a digital work (84) include receiving an annotation of the digital work (84) storing , the annotation, and providing the annotation to the user. The user may be required to submit a valid authorization credential (90) for the annotation. Annotations may be textual or graphical and may be associated with particular content in a digital work. Indicators may be displayed to identify content in the digital work for which annotations are available. A user may exchange compensation or perform a specified action for access to an annotation. Some or all of the compensation received for an annotation may be distributed to the …
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 January 18, 2006 and granted November 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2026.
- 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.
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.