A method, apparatus, and computer implemented instructions for managing rights to a service in a data processing system. A request is received from a user for the service. The rights to the service are identified. Content for the service is received. The content is selectively modified based on the rights...http://www.google.ca/patents/US6807542?utm_source=gb-gplus-sharePatent US6807542 - Method and apparatus for selective and quantitative rights management
