Patents and market value in the U.S. pharmaceutical industry: new evidence from panel threshold regression

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题名:	Patents and market value in the U.S. pharmaceutical industry: new evidence from panel threshold regression
作者:	Chen, Yu-Shan;Shih, Chun-Yu;Chang, Ching-Hsun
贡献者:	淡江大學企業管理學系
关键词:	Patent analysis;Patent citations;Patent counts;Market value;Panel threshold regression
日期:	2013
上传时间:	2014-03-11 11:35:55 (UTC+8)
出版者:	Budapest: Akademiai Kiado Rt.
摘要:	This paper applies panel threshold regression model to verify there is a triple threshold effect of patent citations/sales on the relationship between patent counts/sales and market value/sales in the American pharmaceutical industry. The results demonstrate that patent citations/sales moderates the relationship between patent counts/sales and market value/sales (i.e., the relationship between patent counts and market value). When patent citations/sales is less than or equal to the lowest threshold, 4.68, there is no significant relationship between patent counts and market value. Once patent citations/sales is more than the lowest threshold, there is a positive relationship between patent counts and market value. This study points out that the third regime is optimal because the extent of the positive relationship between patent counts and market value is most.
關聯:	Scientometrics 97(2), pp.161-176
DOI:	10.1007/s11192-013-0999-3
显示于类别:	[企業管理學系暨研究所] 期刊論文

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