Patents by Inventor Antti Rantalahti

Antti Rantalahti 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).

  • Method and device for sharing of content protected by digital rights management
    Patent number: 7690042
    Abstract: The present invention provides methods and devices allowing a secure way of sharing DRM-protected content. A content holder may share the content under certain restrictions. These restrictions include range-based, time-based or usage-based limitations. The invention offers a secure sharing method preventing copyright violations and preserving the copyright owners control over the content use, while also offering new marketing possibilities to him.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: March 30, 2010
    Assignee: Nokia Corporation
    Inventor: Antti Rantalahti
  • Method and Device for Sharing of Content Protected by Digital Rights Management
    Publication number: 20070283420
    Abstract: The present invention provides methods and devices allowing a secure way of sharing DRM-protected content. A content holder may share the content under certain restrictions. These restrictions include range-based, time-based or usage-based limitations. The invention offers a secure sharing method preventing copyright violations and preserving the copyright owners control over the content use, while also offering new marketing possibilities to him.
    Type: Application
    Filed: December 8, 2003
    Publication date: December 6, 2007
    Inventor: Antti Rantalahti