Patents by Inventor Bradley Serbus

Bradley Serbus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Enhancing digital rights management system security through policy enforcement
    Patent number: 7376975
    Abstract: In order to allow for security beyond revocation lists, a policy regarding when permissions may be granted (in the form of a rights document, e.g. a use license or a certificate) is enforced. When a request is made for a rights document, the requester submits an account certificate which includes certain metadata regarding the requester. This metadata is analyzed to determine whether it meets a specific policy before the request is granted. If the request is not granted, the cause of the rejection may be overcome, for example by updating or upgrading some system component (hardware or software) in the requesting system. In certain cases, such an update to overcome a policy-based rejection may be performed transparently to the user.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: May 20, 2008
    Assignee: Microsoft Corporation
    Inventors: Philip Lafornara, Rushmi U. Malaviarachchi, John L. Manferdelli, Michael David Marr, Charles F. Rose, III, Bradley Serbus
  • Tying a digital license to a user and tying the user to multiple computing devices in a digital rights management (DRM) system
    Patent number: 7318236
    Abstract: A first trusted component on a first computing device performs cryptography, evaluation, and enforcement and is tied thereto, and a first user-machine certificate associated with the first computing device is tied to a user. Correspondingly, a second trusted component on a second computing device performs cryptography, evaluation, and enforcement and is tied thereto, and a second user-machine certificate associated with the second computing device is also tied to the user. The first trusted component obtains the content for rendering on the first computing device by way of the first user-machine certificate and the license, and the second trusted component obtains the content for rendering on the second computing device by way of the second user-machine certificate and the same license.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: January 8, 2008
    Assignee: Microsoft Corporation
    Inventors: Marco A. DeMello, Vinay Krishnaswamy, Rushmi U. Malaviarachchi, John L. Manferdelli, Bradley Serbus, Attila Narin, Steve Bourne
  • Enhancing digital rights management system security through policy enforcement
    Publication number: 20050257271
    Abstract: In order to allow for security beyond revocation lists, a policy regarding when permissions may be granted (in the form of a rights document, e.g. a use license or a certificate) is enforced. When a request is made for a rights document, the requester submits an account certificate which includes certain metadata regarding the requester. This metadata is analyzed to determine whether it meets a specific policy before the request is granted. If the request is not granted, the cause of the rejection may be overcome, for example by updating or upgrading some system component (hardware or software) in the requesting system. In certain cases, such an update to overcome a policy-based rejection may be performed transparently to the user.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 17, 2005
    Applicant: Microsoft Corporation
    Inventors: Philip Lafornara, Rushmi Malaviarachchi, John Manferdelli, Michael Marr, Charles Rose, Bradley Serbus
  • Tying a digital license to a user and tying the user to multiple computing devices in a digital rights management (DRM) sytem
    Publication number: 20040172533
    Abstract: A first trusted component on a first computing device performs cryptography, evaluation, and enforcement and is tied thereto, and a first user-machine certificate associated with the first computing device is tied to a user. Correspondingly, a second trusted component on a second computing device performs cryptography, evaluation, and enforcement and is tied thereto, and a second user-machine certificate associated with the second computing device is also tied to the user. The first trusted component obtains the content for rendering on the first computing device by way of the first user-machine certificate and the license, and the second trusted component obtains the content for rendering on the second computing device by way of the second user-machine certificate and the same license.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 2, 2004
    Applicant: Microsoft Corporation
    Inventors: Marco A. DeMello, Vinay Krishnaswamy, Rushmi U. Malaviarachchi, John L. Manferdelli, Bradley Serbus, Attila Narin, Steve Bourne