North-South models of intellectual property rights: an empirical critique

Do Southern intellectual property rights (IPRs) affect Northern innovation? There is much theoretical debate on the impact of IPRs in the South on the incentives of Northern firms to innovate and transfer technologies to the South. While empirical research exists on the effects of Southern IPRs on Northern technology transfers, empirical evidence on the effects of Southern IPRs on Northern innovation is absent. This paper seeks to fill that gap. Using a comprehensive micro-database of US multinational firms and their foreign affiliates in developed countries, this study finds that patent protection in the South has statistically insignificant effects on the research and development of these firms. Rather, the patent regimes of developed countries matter significantly to the R&D of these firms. Developing countries constitute a relatively small share of the world market so that variations in the patent rights of developing economies have contributed marginally to Northern incentives for R&D.