Optimal Patent Protection in a Two‐Sector Economy
研究下游和上游两部门经济中的最优专利保护，发现下游专利保护提高会抑制上游创新，而上游专利保护加速增长，因此最优保护应在上游更高。
This article addresses the issue of optimal patent protection in an economy with a downstream and an upstream sector. The key insight is that higher patent protection in the downstream sector raises the incentives of agents to do R&D in that sector but discourages innovation in the upstream sector because of a market size effect. Hence, higher patent protection in the upstream sector accelerates growth whereas higher patent protection in the downstream sector slows it down. If some innovation is socially desirable, optimal patent protection is necessarily higher in the upstream than in the downstream sector.