Every Thursday, the US Patent and Trademark Office publishes pending patent applications. Publication has no bearing on whether a patent will eventually be issued based on the application. Still, issued patents and published applications are often indicators of what people have been thinking about and the kinds of things that individuals or companies believe may be useful to them in the future. Both of today's featured applications are assigned to Microsoft. The first addresses location-based licensing. The second addresses content revocation and license modification in a DRM system.
20060059096, "Location based licensing," assigned to Microsoft.
The present invention provides a method and system for location-based digital rights management. Digital rights for protected content are restricted to a specific location or region by specifying the approved location of the consuming device within the license. This allows the content owner to specify the geographic locations/regions at which the protected content may be consumed. The device obtains its location from a location entity which is then evaluated against the location constraint within the license. If the device is within the location constraint then the content may be accessed. Acquiring the location of the device before allowing access to certain content helps in preventing a user from accessing a protected document in an area which is considered a prohibited location as defined within the license.
20060059106, "Content revocation and license modification in a digital rights management (DRM) system on a computing device," assigned to Microsoft.
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.