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Abstract for:

Have R&D Spillovers Changed?

Nick  Bloom,  Brian  Lucking,  John  Van Reenen,  May 2018
Paper No' CEPDP1548: | Full paper (pdf)
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Keywords: innovation, RD, patents, productivity and spillovers

JEL Classification: O31; O32; O33; F23

Is hard copy/paper copy available? YES - Paper Copy Still In Print.
This Paper is published under the following series: CEP Discussion Papers
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This paper revisits the results of Bloom, Schankerman, and Van Reenen (2013) examining the impact of R&D on the performance of US firms, especially through spillovers. We extend their analysis to include an additional 15 years of data through 2015, and update the measures of firms' interactions in technology space and product market space. We show that the magnitude of R&D spillovers appears to have been broadly similar in the second decade of the 21st Century as it was in the mid-1980s. However, there does seem to have been some increase in the wedge between marginal social returns to R&D and marginal private returns with the ratio of marginal social to private returns increasing to a factor of 4 from 3. There is certainly no evidence that the need to subsidize R&D has diminished. Positive spillovers appeared to increase in the 1995-2004 boom.