Dynamics of regional diversification: A new approach using trademark data

This paper pilots an approach for using trademark data to study regional diversification. Bridging the respective literatures, we develop a regional trademarking-intensity measure that can shed new light on how different regions diversify while also accounting for changing industrial structures and income levels (regional gross domestic product). The approach reveals that density has a moderate effect on trademarking intensity and confirms the strong relationship between new firm formation and regional diversification. These effects are found to vary by sector and to be sensitive to industry-level employment and turnover. Lastly, the analysis indicates that regional diversification differs sharply between urban and peripheral regions.