The aim of this article is to present the results of the research conducted by the authors that focus on the search for the impact of sales coverage of small and micro-enterprises, as representatives of the SME sector, upon the innovative activity within the West Pomeranian regional innovation system. The indirect object of this research is to indicate the boundary conditions in the model structure of the regional network of innovation. The research focused on 544 small and micro entities from the Western Pomerania that responded to a questionnaire. This research has used logit modelling (probability theory), for it is an effective research tool for many statistic data with the dependent variable of a qualitative nature. The results confirmed the relationship between sales coverage in small and micro-entities, and their innovation activities in Polish regions such as the Western Pomerania.