Nakanishi, Yasuo and Yamada, Setsuo (2007): Market Value and Patent Quality in Japanese Manufacturing Firms.
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We investigate the effect of quality of patents on the market value of firms represented by the Tobin's q. We consider the number of objections as well as the number of citations. We construct the database of patent stock, citation-weighted patent stock and objection-weighted patent stock. Our analysis is pioneering work involving Japanese data, as we were unable to find any pre-existing Japanese data that considered both truncation problems and quality of the patent. Our study departs from Hall, Jaffe and Trajtenberg (2000) because of the application of objections as well as the consideration of the quality of patent citations.
|Item Type:||MPRA Paper|
|Original Title:||Market Value and Patent Quality in Japanese Manufacturing Firms|
|Keywords:||Patent, Citation, q, Market value, Innovation|
|Subjects:||O - Economic Development, Innovation, Technological Change, and Growth > O3 - Innovation ; Research and Development ; Technological Change ; Intellectual Property Rights > O32 - Management of Technological Innovation and R&D|
|Depositing User:||Yasuo Nakanishi|
|Date Deposited:||28. Sep 2008 00:16|
|Last Modified:||14. Feb 2013 21:41|
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Market Value and Patent Quality in Japanese Manufacturing Firms. (deposited 04. Sep 2008 07:39)
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