The innovation process management increasingly gains importance due to tough competition and constantly changing business external and internal environments. In this article, diﬀerent approaches to the innovation process management are compared. Then some requirements of implementing and managing innovation processes are introduced considering the ad-hoc nature of innovation activities. After that overall innovation process model is proposed with incorporation of expert communities consisting of internal and external experts among employees, suppliers, consumers, research institutions and competitors. As a result a flexible and useful innovation process model is presented based on a theoretical framework, empirical studies and S-BPM approach. The given research was held in a frame of the contract № 13.G25.31.0096 with the Ministry for Education and Science of Russian Federation «Creation of hi-tech manufacture of unstructured information processing in cross-platform system on the open source software basis in order to increase management efficiency of innovative activity of enterprises in modern Russia».