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The existence of localized knowledge spillovers found by Jaffe, Trajtenberg and Henderson (1993) has recently been challenged by Thompson and Fox-Kean (2005). To settle this debate, we develop a new approach by incorporating their concepts of control patents into the distance-based test of...
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China recently surpassed the USA as the greatest global source of patent applications. However, without internationally … comparable measures of patent quality it remains questionable whether China's patent expansion constitutes the rise of a new … internationally comparable, quality-adjusted figures for applications made under the Patent Cooperation Treaty (PCT). We show that …
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patent applications as a technology diffusion channel. Considering the relationship between research and productivity …, international patent pattern reflects the link between the source (R&D) and the use (IFP). To estimate patent related spillover … and cointegration and to obtain reliable coefficients. I find that patent related foreign R&D spillover effects are …
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