Patents and R&D: Is There A Lag?

Patents and R&D: Is There A Lag?

This paper extends earlier work on the RID to patents relationship (Pakes-Griliches 1980, and Hausman, Hall, and Griliches,1984) to a larger but shorter panel of firms…R&D itself turns out to befairly well approximated by a random walk. Neither approach yields strong evidence of a long lag. The available sample, though numerically large, turns out not to be particularily informative on this question. It does reconfirm, however, a significant effect of R&D on patenting (with most of it occuring in the first year) and the presence of rather wide and semi-permanent differences among firms in their patenting policies.

Bronwyn H. Hall, Zvi Griliches, Jerry A. Hausman

International Economic Review

June 1986

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By |2018-01-01T00:00:00-08:00January 1st, 2018|Efficiency/Growth, Intellectual Property, Patents, Reference|