Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
US6895503B2 · kind B2 · utility
50Cited by
41References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/1075
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Digital rights management allows one or more of usage rights and delegation rights to be associated with a document. Through the use of the usage rights and the delegation rights, a hierarchy of rights associated with a document is created that provides a tree-type structure of rights extending from the content owner down through one or more users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.