In the discourse of service design; terms such as platforms; transformation and co-creation have become part of what seems to be an emergent lingua franca. In the participatory design discourse; and the surrounding design traditions; related terms and ideas were developed. The development of the discourse of participatory design; during the last three decades of the 20th century; influence the way we understand the provisions for and possibilities of service design. The analysis is performed along three themes collected from the development of participatory design; and examples of how the legacy of participatory design has been appropriated are given. We conclude that the two disciplines share a basic structure consisting of involvement techniques; cooperative approaches; and emancipatory objectives. Moreover; some areas of future research for service design are identified.