Recently, literature on innovation in service activities has increased significantly. Much effort has been concentrated on understanding the importance of innovation for these activities, and on stressing innovative differences relative to the manufacturing innovation model. However, a deeper understanding is needed in three main areas: the degree of innovation heterogeneity among different service activities, the factors that explain this heterogeneity, and the primary drivers of the innovation process for each activity. Using results from the Third Community Innovation Survey, this paper aims to identify the extent to which there are similarities and differences in the main innovation attributes in four important service sub-sectors. After describing the characteristics of innovation and the behavior of variables in the sub-sectors, a typology of innovation patterns is identified. © 2009 Taylor & Francis.