EN
Today, a particularly important role in the functioning and development of enterprises plays innovation. This is understood as the ability to create innovative space capable to the creation and diffusion of innovation. Nowadays, a thriving innovation activity is identified with the achievement of business success in the economic arena. With this in mind it is worth exploring the determinants of innovation. It is therefore this article was proposed. The study analyzed the impact of GDP, internal expenditure on R&D and capital expenditures on the size of innovative activities of enterprises located in the sixteen Polish provinces. The research was limited to a period of seven years, i.e. from 2008 to 2014. The aim of this article is therefore to determine the level of significance of some factors influencing the size of innovation activities in Polish enterprises. To achieve the objective the analysis of statistical data was carried out and the panel model calculated by the classical method of least squares was built. Conducted tests will verify three research hypotheses. The software GNU Regression Econometric and Time-Series Library - GRETL was used for calculations.(original abstract)