For more than 40 years, governments and professional associations have acted, voted or lobbied against the implementation of the Community Patent (COMPAT). The econometric results and simulations presented in this paper suggest that, thanks to its attractiveness in terms of market size and a...

This paper argues that the consequences of the ‘fragmentation’ of the European patent system are more dramatic than the mere prohibitive costs of maintaining a patent in force in many jurisdictions. First, detailed analysis of judicial systems in several European countries and four case...