The thesis contains two emphases: first the structure genesis model of formally structured innovation networks, and second the analysis of interorganizational information exchange processes in such social systems. The structure genesis of innovation networks is after-drawn on the basis of a own complex model, with its assistance in chronological consequence the different structure levels (network, network organization, projects organization), the shaping processes (idea, partner search, constitution, realization), and their characteristics can be integrated. The organization of the precarious transition between the structure levels, the initiation of projects as well as the co-ordination of the projects and integration of the members represent the tasks of the management. Solutions could be derived by the empirical investigation with two innovation networks for the optimization of network initiation and the network operation. The concept of interorganizational-osmotic communication processes examines, how, in communicative aspects, social systems deals with intra-system organization‘s external borders. By means of a communication analysis could be after-drawn, which kinds of information (innovation-, network organization- and project organization-relevantly) with which characteristics (integrative-co-ordinative and perspective-planning) which gateways (selective channels and information broker) organization‘s external borders to penetrate. As also with the structure genesis, then a strong person bindingness is to be observed also with inter-organizational information exchange. The communicative key participants are called, extending the theory of diffusion and opinion leadership, information brokers.