Patents Represented by Attorney Nixon Peasbody, LLP

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  • Digital works having usage rights and method for creating the same
    Patent number: 7225160
    Abstract: Digital work adapted to be distributed within a system for controlling at least one of the distribution and use of digital works. The digital work includes: digital content representing a portion of a digital work suitable for being rendered by a rendering device and usage rights associated with the digital content. The usage rights specify a manner of use indicating one or more stated purposes for which the digital work can be at least one of used and distributed by an authorized party.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: May 29, 2007
    Assignee: ContentGuard Holdings, Inc.
    Inventors: Mark J. Stefik, Peter L. T. Pirolli, Ralph C. Merkle