The paper presents a study to define some of the most important legal topics that need to be included in the Services Sciences' research agenda. To analyze what sort of legal challenges the forthcoming services will have, an example of advanced service framework, MobiLife Service Framework, is presented. The framework highlights especially challenges in privacy and data protection and intellectual property rights. The analysis is complemented with a discussion on some other scenarios and examples that bring out legal issues. Based on the analysis, the paper concludes the most important legal topics that should be studied further in relation to services sciences in the fields of privacy and data protection, intellectual property rights, and contracts.