This paper uses obstacles to innovation to investigate the heterogeneity of Polish innovating firms. Based on the frequency with which they introduce innovations, and using data from both CIS4 (for 2002-2004) and CIS5 (2004-2006), the paper distinguishes between two groups of innovating firms:...

This paper investigates the barriers to innovation perceived by Polish manufacturing firms. It refers to the heterogeneity of innovation active firms. We introduce a taxonomy of innovative firms based on the frequency with which they introduce commercialised innovations using data from both CIS4...