Firm size and inventive activity: The evidence reconsidered

This paper analyses the relationship between firm size and inventive activity in the United States for the late seventies. It is argued that the inventive activity measure used, R&D expenditure, is a more ‘neutral’ measure in relation to firm size, than both R&D employment and the number of patents. Contrary to most empirical research in this field, the analyses carried out in the present paper indicate that inventive activity seems to increase more than proportionately with firm size.