The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2010
Filed:
Jun. 05, 2002
Guillermo Lao, Torrance, CA (US);
Xin Wang, Torrance, CA (US);
Thanh Ta, Huntington Beach, CA (US);
Joseph Zhung Yee Fung, Cerritos, CA (US);
Guillermo Lao, Torrance, CA (US);
Xin Wang, Torrance, CA (US);
Thanh Ta, Huntington Beach, CA (US);
Joseph Zhung Yee Fung, Cerritos, CA (US);
ContentGuard Holdings, Inc., Wilmington, DE (US);
Abstract
Digital rights management method and system for items having usage rights. A first activation device defines a first trust zone. A first license device associated with the first trust zone generates an open license having usage rights associated with a first item. A second activation device defines a second trust zone and is adapted to issue a software package that enforces usage rights. A user device associated with the second trust zone is adapted to receive the software package from the second activation device, to receive the open license associated with the first item, and to use the first item in accordance with the open license. In addition, a method is provided for enforcing a license granting usage rights associated with a protected item, and for classifying a license, the license being an open license or a closed license.