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:
Apr. 29, 2008
Filed:
Apr. 30, 2002
Attila Narin, Bothell, WA (US);
Peter David Waxman, Bellevue, WA (US);
Christopher Robert Richard Madonna, Seattle, WA (US);
Marco A. Demello, Redmond, WA (US);
Chandramouli Venkatesh, Sammamish, WA (US);
Attila Narin, Bothell, WA (US);
Peter David Waxman, Bellevue, WA (US);
Christopher Robert Richard Madonna, Seattle, WA (US);
Marco A. DeMello, Redmond, WA (US);
Chandramouli Venkatesh, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A digital license corresponds to encrypted digital content and includes a content key for decrypting same. The content key is encrypted and is decryptable by a decryption key available only to the first persona, the license thereby being tied to the first persona. The license is a first license and further includes referral information specifying a first location at which a second persona may obtain a second license for the content tied thereto. The second persona requests to render the content by way of the first license and the request is denied because the first license is not tied to the second persona. The referral information is obtained from the first license and employed to initiate contact with the specified first location and obtain the second license tied to the second persona.