2020 Fiscal Year Final Research Report
Theoretical analysis of economic growth and cycles using models with finitely-lived patents
Project/Area Number |
18K12750
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 07010:Economic theory-related
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Research Institution | Nanzan University |
Principal Investigator |
Tsuzuki Eiji 南山大学, 経済学部, 教授 (10714769)
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Keywords | R&D / 経済成長 / 特許 / 安定性分析 / 政策ラグ |
Outline of Final Research Achievements |
I performed stability analysis of models with finitely-lived patents. In the model in which the economic growth rate is given exogenously, shortening the length of patents initially makes the economy unstable, but when it gets shorter, the economy stabilizes. Moreover, in an endogenous growth model, the economy is stable, regardless of the length of the patent life. However, by assuming the imperfections of the patent system, I considered the case in which a company provides technical protection to the product as a countermeasure against imitation. In this case, (1) the patent policy that maximizes the growth rate is consistent with economic stability. However, (2) the policy that maximizes welfare is unlikely to be consistent with economic stability.
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Free Research Field |
マクロ経済学
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Academic Significance and Societal Importance of the Research Achievements |
特許についての研究では、特許の幅と特許の長さという2つの概念によって特許を特徴づけ、最適な特許政策について論じている。 「特許の幅」は特許による保護の強さを、「特許の長さ」は特許によって技術が保護される時間的な長さを表す概念である。 本研究は特に、特許期間が経済の安定性に与える影響について分析したものであり、実際の特許政策に生かすことができる。
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