保護智慧財產權與補貼研究發展－－疊代模型的分析

INTELLECTUAL PROPERTY RIGHTS PROTECTION AND RESEARCH AND DEVELOPMENT SUBSIDIES IN A MODEL WITH NEW GENERATIONS

本文的主要目的在於比較保護智慧財產權與補貼研究發展對經濟成長的影響。需求面依循Blanchard(1985)所設定的疊代模型，供給面則依照Romer(1987)所提出的研究發展架構。本文發現：若個人不存在出生與死亡的機率，則保護智慧財產權與補貼研究發展皆可刺激長期的經濟成長；反之，若考慮出生與死亡的機率，保護智慧財產權所造成的跨代所得重分配不利於長期經濟成長，而補貼研發所造成的跨代所得重分配則有助於長期的經濟成長。因此，以刺激長期經濟成長為目的下，補貼研究發展將較保護智慧財產權為佳。

The main purpose of this paper is to compare the growth effect of intellectual property rights protection (IPRP) with that of research and development subsidies (R&DS). To achieve this aim, we consider a closed economy, with a demand-side based on the Blanchard (1985) uncertain lifetimes’ approach, and supply-side based on the R&D endogenous growth model developed by Romer (1987). It is found that IPRP contributes a positive effect on the balanced growth rate of the economy if the probability of death and birth is small enough, but it reduces the balanced growth rate of the economy if the probability of death and birth is relatively large. It is also found that R&DS boosts the balanced economic growth rate regardless of whether the probability of death and birth is large or small. Consequently, for the sake of stimulating the economy’s growth rate, R&DS is generally superior to IPRP.