This research intends to analyze the internationalization of incubated technology-based companies and the influence of the incubation period in this process. The theoretical model was based on behavioral theories of the companies internationalization and interviews with specialists in entrepreneurship and internationalization. Were analyzed four companies of the Technology Incubator at PUC-Rio, using the method of case study. From the analysis of these interviews was possible to observe that, for the internationalization process, there is two predominant behavioral theories: the Theory of Networks and Theory of Born Globals. Regarding the influence of Incubation period in the process of internationalization, it was noticed that, specifically for the internationalization process of the companies, the fact of having been incubated was unremarkable. However, for the formation process of the company, incubation period has been identified as important, being the network environment of the incubator and the association s with the University, the factors most relevant to businesses. So, this research wished to contribute to the discussion about the internationalization of companies incubated basic-technology, which is an important role in the economy.