Examination and Approval of New Patents in an Endogenous Growth Model
Examination and Approval of New Patents in an Endogenous Growth Model
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DOI：
10.1016/j.econmod.2020.05.028
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发表时间：
2020-09-01
影响因子：
4.7
通讯作者：
Morimoto, Takaaki
中科院分区：
文献类型：
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作者：
Akimoto, Kiyoka;Morimoto, Takaaki
本研究将新开发产品的审查时间引入标准的R& D增长模型。生产此类产品需要得到主管部门的批准，而对其进行检查既要花费成本，又要花费时间。因此，在发明和生产之间存在着滞后。本研究探讨缩短审查时间对审查积压（审查中的新发明商品数量）、经济增长和福利的影响。我们得到一个倒U形的积压和持续时间之间的关系，因为减少持续时间减少积压的加速审查过程中，但同时增加积压的促进研发和增加申请的数量。此外，我们证明，减少考试时间促进经济增长。然而，由于考试费用较高，考试时间较短，需要相当多的资源。因此，极短的持续时间损害了福利。我们的数值分析揭示了存在一个最佳的考试时间。
This study introduces the examination duration for newly developed goods into a standard R&D-based growth model. Producing such goods requires approval from an authority, and their examination incurs both cost and time. Thus, there is a lag between invention and production. This study investigates the effects of reducing the examination duration on examination backlogs (the number of newly invented goods under examination), economic growth, and welfare. We obtain an inverted-U shaped relationship between backlogs and duration, because reducing the duration decreases backlogs by accelerating the examination process, but simultaneously increases backlogs by promoting R&D and increasing the number of applications. In addition, we demonstrate that reducing the examination duration promotes economic growth. However, a rather short examination duration needs considerable resources as the examination has a higher cost. Thus, an extremely short duration hurts welfare. Our numerical analysis reveals the existence of an optimal examination duration.