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:
Jul. 18, 2006
Filed:
Mar. 26, 2002
Charlie David Chase, Jr., Woodinville, WA (US);
Krishnamurthy Ganesan, Redmond, WA (US);
Philip J. Lafornara, Bellevue, WA (US);
Jeffrey Richard Mckune, Sammamish, WA (US);
Clifford Paul Strom, Sammamish, WA (US);
Vijay K. Gajjala, Sammamish, WA (US);
Charlie David Chase, Jr., Woodinville, WA (US);
Krishnamurthy Ganesan, Redmond, WA (US);
Philip J. Lafornara, Bellevue, WA (US);
Jeffrey Richard McKune, Sammamish, WA (US);
Clifford Paul Strom, Sammamish, WA (US);
Vijay K. Gajjala, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Content revocation is achieved by disabling licenses issued to a computing device for the content. A content revocation is delivered within a license to the computing device. Upon license storage the content revocation is recognized, validated, and stored in a secure state store under the public key of the content server (PU-CS) that issued the content. Each license has a (PU-CS) therein, and each license evaluation considers each content revocation stored in the state store and having the same (PU-CS). The license is disabled or otherwise affected based on the considered content revocation. A content revocation is one form of a license modification that may be delivered within a license.