Technology diffusion, innovation size, and patent policy
Technology diffusion, innovation size, and patent policy
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DOI：
10.1016/j.euroecorev.2019.05.012
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发表时间：
2019-09
影响因子：
2.8
通讯作者：
Keiichi Kishi
中科院分区：
文献类型：
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作者：
Keiichi Kishi
本文建立了基于技术扩散和创新的熊彼特增长模型，其中创新规模的分布是内生决定的。企业通过随机结合其他企业拥有的现有技术来改进目标产品。此外，企业有助于采用新开发的前沿技术。创新者必须达到专利所要求的最小创新规模。也就是说，专利局只对卓越的创新授予专利。研究表明，由于创新规模分布的内生响应，最小创新规模的增加可能会降低平均可专利创新规模。这意味着，即使专利局为了分配专利而要求优秀的创新，创新者平均而言也倾向于生产劣质的可获得专利的创新。
We develop a Schumpeterian growth model based on technology diffusion and innovation, whereby the distribution of the innovation size is endogenously determined. Firms improve the targeted products by randomly combining existing technologies owned by other firms. Furthermore, the firms contribute to the adoption of newly developed frontier technology. The innovators must attain the minimum innovation size required for a patent. That is, the patent office grants patents only for superior innovations. We show that an increase in the minimum innovation size may reduce the average patentable innovation size because of an endogenous response of the distribution of innovation size. This implies that even if the patent office requires superior innovations in order to assign patents, innovators tend to produce inferior patentable innovations on average.