Patents by Inventor Krassimir E. Karamfilov

Krassimir E. Karamfilov 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).

  • Patent number: 8505068
    Abstract: The present invention extends to methods, systems, and computer program products for deriving express rights in protected content. Embodiments of the invention provide mechanisms to convert implicit rights to express rights for entities, including applications, inside and outside of an organizational (e.g., enterprise) boundary. The conversion can occur dynamically, based on the information protection policies defined by a policy administrator, granting entities express access to perform tasks on protected content.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 6, 2013
    Assignee: Microsoft Corporation
    Inventors: Tejas D. Patel, Gregory Kostal, Yuhui Zhong, Vladimir Yarmolenko, Pankaj Mohan Kamat, Krassimir E. Karamfilov
  • Patent number: 8447976
    Abstract: Business to business secure mail may be provided. Consistent with embodiments of the invention, a protected message may be received. The recipient may request a token from a trust broker, submit the token to an authorization server associated with the sender, receive a user license from the authorization server; and decrypt the protected message using the user license. The protected message may restrict actions that may be taken by the recipient, such as forwarding to other users.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: May 21, 2013
    Assignee: Microsoft Corporation
    Inventors: Chandresh K. Jain, Mayank Mehta, Frank D. Byrum, Edward Banti, Ayse Yesim Koman, James R. Knibb, Michael A. Nelte, Christopher Barnes, Hao Zhang, Victor Boctor, Tejas D. Patel, Yuhui Zhong, Gregory Kostal, Vladimir Yarmolenko, Pankaj M. Kamat, Amit K. Fulay, Krassimir E. Karamfilov
  • Patent number: 8225390
    Abstract: The present invention extends to methods, systems, and computer program products for licensing protected content to application sets. Embodiments of the invention permit a local machine to increase its participation in authorizing access to protected content. For example, an operating system within an appropriate computing environment is permitted to determine if an application is authorized to access protected content. Thus, the application is relieved from having to store a publishing license. Further, authorization decisions are partially distributed, easing the resource burden on a protection server. Accordingly, embodiments of the invention can facilitate more robust and efficient authorization decisions when access to protected content is requested.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: July 17, 2012
    Assignee: Microsoft Corporation
    Inventors: Kenneth D. Ray, Pankaj M. Kamat, Charles W. Kaufman, Paul J. Leach, William R. Tipton, Andrew Herron, Krassimir E. Karamfilov, Duncan G. Bryce, Jonathan D. Schwartz, Matthew C. Setzer, John McDowell
  • Publication number: 20120079557
    Abstract: The present invention extends to methods, systems, and computer program products for deriving express rights in protected content. Embodiments of the invention provide mechanisms to convert implicit rights to express rights for entities, including applications, inside and outside of an organizational (e.g., enterprise) boundary. The conversion can occur dynamically, based on the information protection policies defined by a policy administrator, granting entities express access to perform tasks on protected content.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 29, 2012
    Applicant: Microsoft Corporation
    Inventors: Tejas D. Patel, Gregory Kostal, Yuhui Zhong, Vladimir Yarmolenko, Pankaj Mohan Kamat, Krassimir E. Karamfilov
  • Patent number: 7882035
    Abstract: The present invention extends to methods, systems, and computer program products for pre-performing operations for accessing protected content. Cryptographic user key pairs can be pre-generated and distributed in response to a variety of different events prior to provisioning client machine for accessing protected content. Usage licenses can be pre-generated and allocated prior to requests for usage licenses. Usage licenses can be pre-obtained for client machines prior to client machines access protected content. Pre-performed operations can be performed in response to detected events, such as, for example, reduced resource consumption in a Digital Rights Management system.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: February 1, 2011
    Assignee: Microsoft Corporation
    Inventors: Scott C. Cottrille, Gregory Kostal, Rushmi U. Malaviarachchi, Jeffrey M. Brown, Umesh R. Dhond, Amit Fulay, Jody A. Hendrix, Krassimir E. Karamfilov, Yevgeniy Rozenfeld, Vladimir Yarmolenko, Yuhui Zhong
  • Publication number: 20100313016
    Abstract: Transport pipeline decryption may be provided. Consistent with embodiments of the invention, a protected message may be received and decrypted. The decrypted message may be provided to pipeline agents, such as anti-virus, anti-spam, journaling, and/or policy enforcement agents. The message may then be re-encrypted and delivered.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 9, 2010
    Applicant: Microsoft Corporation
    Inventors: Hao Zhang, Danny Tin-Van Chow, Ayse Yesim Koman, Frank D. Byrum, Mayank Mehta, Chandresh K. Jain, Victor Boctor, Charlie R. Chung, Tejas D. Patel, Yuhui Zhong, Amit K. Fulay, Gregory Kostal, Pankaj M. Kamat, Vladimir Yarmolenko, Krassimir E. Karamfilov
  • Publication number: 20100306535
    Abstract: Business to business secure mail may be provided. Consistent with embodiments of the invention, a protected message may be received. The recipient may request a token from a trust broker, submit the token to an authorization server associated with the sender, receive a user license from the authorization server; and decrypt the protected message using the user license. The protected message may restrict actions that may be taken by the recipient, such as forwarding to other users.
    Type: Application
    Filed: June 1, 2009
    Publication date: December 2, 2010
    Applicant: Microsoft Corporation
    Inventors: Chandresh K. Jain, Mayank Mehta, Frank D. Byrum, Edward Banti, Ayse Yesim Koman, James R. Knibb, Michael A. Nelte, Christopher Barnes, Hao Zhang, Victor Boctor, Tejas D. Patel, Yuhui Zhong, Gregory Kostal, Vladimir Yarmolenko, Pankaj M. Kamat, Amit K. Fulay, Krassimir E. Karamfilov
  • Publication number: 20090192942
    Abstract: The present invention extends to methods, systems, and computer program products for pre-performing operations for accessing protected content. Cryptographic user key pairs can be pre-generated and distributed in response to a variety of different events prior to provisioning client machine for accessing protected content. Usage licenses can be pre-generated and allocated prior to requests for usage licenses. Usage licenses can be pre-obtained for client machines prior to client machines access protected content. Pre-performed operations can be performed in response to detected events, such as, for example, reduced resource consumption in a Digital Rights Management system.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Applicant: MICROSOFT CORPORATION
    Inventors: Scott C. Cottrille, Gregory Kostal, Rushmi U. Malaviarachchi, Jeffrey M. Brown, Umesh R. Dhond, Amit Fulay, Jody A. Hendrix, Krassimir E. Karamfilov, Yevgeniy Rozenfeld, Vladimir Yarmolenko, Yuhui Zhong