Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2007-05-22
2007-05-22
Trammell, James P. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S051000, C705S052000, C705S053000, C705S055000, C705S056000, C705S057000, C705S058000, C705S080000, C705S059000, C707S793000, C715S252000, C726S026000
Reexamination Certificate
active
09867746
ABSTRACT:
A method and apparatus for facilitating transfer of usage rights for digital content. The system comprises digital content, a usage rights module containing usage rights information associated with the content for a user, a transfer permission module containing transfer permission information for the content, a current user identification module containing identity information indicating the identity of the user, and means for manipulating the current user identification module to change the identity information. The content can be transferred form one user to another and the current user identification module can be manipulated to reflect the current user and to permit the current user to have usage rights in the document.
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Gilliam Charles P
Lao Guillermo
Nahidipour Aram
Raley Michael C
Ta Thanh T
ContentGuard Holdings Inc.
Kaufman Marc S.
Nixon & Peabody LLP
Sherr Cristina Owen
Trammell James P.
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