Variably controlling access to content
CA 2582100 C · Owner: O'Sullivan, Joseph K. · Inventors: O'Sullivan, Joseph K.; Whitten, Alma W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A software module is presented that enables a person to determine the relevance of a document while preventing the person from making a copy of the entire document. In one embodiment, this is accomplished by programmatically controlling which portions of a document will be presented to a user and which portions will not be presented to the user. In one embodiment the software , module is used in conjunction with a search engine to present a document search result.
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 September 30, 2005 and granted July 25, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2025.
- 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.