Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2010-06-28
2011-12-13
Fischer, Andrew J. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C726S027000
Reexamination Certificate
active
08078542
ABSTRACT:
A method, system and device for transferring rights adapted to be associated with items from a rights supplier to a rights consumer, including obtaining a set of rights associated with an item, the set of rights including meta-rights specifying derivable rights that can be derived from the meta-; determining whether the rights consumer is entitled to the derivable rights specified by the meta-rights; and deriving at least one right from the derivable rights, if the rights consumer is entitled to the derivable rights specified by the meta-rights, wherein the derived right includes at least one state variable based on the set of rights and used for determining a state of the derived right.
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Chen Eddie J.
Lao Guillermo
Nguyen Mai
Ta Thanh
Wang Xin
ContentGuard Holdings Inc.
Fischer Andrew J.
Hertzler Stephen M.
Kaufman Marc S.
Reed Smith LLP
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