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:
Nov. 15, 2011
Filed:
Apr. 23, 2004
Benjamin Brooks Cutter, Kirkland, WA (US);
Brian P. Evans, Redmond, WA (US);
Clifford P. Strom, Sammamish, WA (US);
Vikas Khandelwal, Redmond, WA (US);
Benjamin Brooks Cutter, Kirkland, WA (US);
Brian P. Evans, Redmond, WA (US);
Clifford P. Strom, Sammamish, WA (US);
Vikas Khandelwal, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A digital license includes an identification of a removal service that can authorize removing such license. A client selects the license to be removed and the service, constructs a challenge including therein a challenge license identification block (LIB) identifying the license to be removed, and sends the challenge to the service. The service receives the challenge, stores at least a portion of the challenge in a database, constructs a response corresponding to the challenge and including therein a response LIB identifying the license to be removed and an identification of the service, and sends the response to the client. The client receives the response, employs the response LIB from the response to identify the license to be removed, and removes the identified license upon confirming that the identification of the service in the identified license matches the identification of the service in the response.