In our days, German machine tool makers accuse their Chinese competitors of violating patent rights and illegally imitating German technology. A century ago, however, German machine tool makers used exactly the same methods to imitate American technology. To understand the dynamics of this...

In this paper, we use both patents’ individual life span and foreign patenting activities in Germany to identify the most valuable patents of the 21 most innovative countries (except for Germany) from the European Core, the European periphery and overseas between 1877 and 1932. Our empirical...