Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
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United States of America Patent
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May 17, 2005
Grant Date -
Dec 5, 2002
app pub date -
May 31, 2001
filing date -
May 31, 2001
priority date (Note) -
In Force
status (Latency Note)
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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.
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