International comparisons of patent systems are essential to harmonization treaties and to analyze economic growth. Yet these comparisons often rely on little but conventional wisdom. This paper develops an empirical method to compare the economic strength and quality of patent systems by using...

This paper provides novel empirical evidence on the private value of patents and R&D in European firms during the period 1991-2004. We explore the relationship between firm's stock market value, patents, and "quality"-weighted patents issued by the European Patent Office (EPO) and the US Patent...

This paper provides novel empirical evidence on the private value of patents and Ramp;D in European firms during the period 1991-2004. We explore the relationship between firm's stock market value, patents, and quot;qualityquot;-weighted patents issued by the European Patent Office (EPO) and the...