The IMF Working Papers series is designed to make IMF staff research available to a wide audience. With nearly 300 released each year, working papers cover a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and national and international economic developments.
This paper studies the welfare consequences of a government regulation that forces a patented equipment to be supplied by a number of independent producers. On the one hand, such a regulation hurts the value of a patent and therefore reduces activities in the R&D sector. On the other hand, the enhanced competition for the equipment improves efficiency in the manufacturing sector. Should monopolies protected by intellectual property rights be broken up? The answer is 'no' in a Romer-type growth model, but there is sufficient reason to believe that the answer could be 'yes' in a model advocated by Jones (1995).