政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/141248

政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/141248

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政大典藏 > College of Social Science > Department of Economics > Theses > Item 140.119/141248

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/141248

Title:	創新困難程度與專利廣度 : R&D品質提升模型的分析 Innovation difficulty and patent breadth in an R&D quality-ladder model
Authors:	馬靖純 Ma, Ching-Chun
Contributors:	賴景昌 Lai, Ching-Chong 馬靖純 Ma, Ching-Chun
Keywords:	研發品質階梯式提升創新困難程度專利廣度 R&D Quality ladder model Difficulty of R&D Patent breadth
Date:	2022
Issue Date:	2022-08-01 18:27:35 (UTC+8)
Abstract:	本文的模型使用熊彼得 (Schumpeter) 的內生成長模型，考慮研發廠商面對創新困難程度的差異，分析在不同的產品品質研發階段和創新成功機率具有非線性關係之下，創新困難程度的提升會如何影響研發勞動投入量、社會的經濟成長率與整體社會福利水準。最後，本文探討政府對專利權的保護態度對整體社會福利造成的影響。本文研究發現，隨著研發商品品質不斷地提升，研發廠商面對的創新困難程度也同時提高，促使實質利率與經濟成長率位在較低的水準，並且拉低整體社會的福利。當政府補助比例、中間財產品品質提升幅度與勞動投入量的增加，三者都會提升實質利率與經濟成長率。而在專利廣度的討論下，當政府高度重視專利保護，廠商更加願意投入研發，使實質利率、經濟成長率與整體社會福利水準皆會獲得有效提升。 Based on Schumpeter`s endogenous growth model, this thesis considers that R&D manufacturers face the different difficulty in R&D, and analyzes how will the difficulty in R&D affects labor input, social economic growth rate and social welfare under the non-linear relationship between different R&D stages and innovation success probability. Finally, this paper explores the impact of the government`s attitude towards patent protection on social welfare. Three main findings emerge from the analysis. First, a higher degree of innovation difficulty will drive the real interest rate and economic growth rate to a lower level, and reduce the social welfare. Second, when increasing in the proportion of government subsidies, the improvement in the quality of intermediate goods and the labor input, these three situations tend to higher the real interest rate and economic growth rate. Third, under patent breadth, as an increase in the protection of the leading patent, manufacturers will have more willing to invest in R&D, and then the real interest rate, economic growth rate and social welfare level will be improved.
Reference:	賴景昌 (2018)，內生經濟成長理論，逢甲經研所上課講義。賴景昌 (2019)，內生經濟成長理論 : 品質提升模型，逢甲經研所上課講義。賴景昌 (2021)，內生經濟成長理論 : R&D，政大經研所上課講義。 Aghion, P. and Howitt, P (2009), The Economics of Growth, Ch.3, Mass., Cambridge: MIT Press. Barro, R. J. and Sala-i-Martin, X. (2004), Economic Growth, 2nd Edition, Ch.6, Mass., Cambridge: MIT Press. Bloom, N., Jones, C. I., Van Reenen, J. and Webb, M. (2020), “Are Ideas Getting Harder to Find?,” American Economic Review 110, 1104-44. Chiang, A. C. (1992), Elements of Dynamic Optimization, 29-32, New York: McGraw-Hill,. Chu, A. C. (2009), “Lecture Notes on Quality Ladder Growth Models,” Unpublished Manuscript. Chu, A. C. and Pan, S. (2013), “The Escape-infringement Effect of Blocking Patents on Innovation and Economic Growth,” Macroeconomic Dynamics 17, 955-969. Goh, A. T. and Olivier, J. (2002), “Optimal Patent Protection in a Two-Sector Economy,” International Economic Review 43, 1191-1214. Grossman, G. M. and Helpman, E. (1991), “Quality Ladders in the Theory of Growth,” Review of Economic Studies 58, 43-61. Jones, C. I. (1995), “R&D-based Models of Economic Growth,” Journal of Economy 103, 759-784. Lernel, J. (1994), “The Importance of Patent Scope: An Empirical Analysis,” Rand Journal of Economics 25, 319-333. Lucas, R. E. (1998), “On the Mechanics of Development,” Journal of Monetary Economics 22, 3-42 O’Donoghue, T. and Zweimuller, J. (2004), “Patents in a Model of Endogenous Growth,” Journal of Economic Growth 9, 81-123. Rivera-Batiz, L. A. and Romer, P. M. (1991), “Economic Integration and Endogenous Growth,” The Quarterly Journal of Economics 106, 531-555. Romer, P. M. (1987), “Growth Based on Increasing Returns Due to Specialization,” AEA Papers and Proceedings 77, 56-62. Romer, P. M. (1990), “Endogenous Technical Change,” Journal of Political Economy 98, S71-S102. Solow, R. M. (1957), “Technical Change and the Aggregate Production Function,” Review of Economics and Statistics 39, 312-320. Wright, D. (1999), “Optimal Patent Breadth and Length with Costly Imitation,” International Journal of Industrial Organization 17, 419-436.
Description:	碩士國立政治大學經濟學系 109258015
Source URI:	http://thesis.lib.nccu.edu.tw/record/#G0109258015
Data Type:	thesis
DOI:	10.6814/NCCU202200847
Appears in Collections:	[Department of Economics] Theses

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