Key points are not available for this paper at this time.
Journal Article Imitation Costs and Patents: An Empirical Study Get access Edwin Mansfield, Edwin Mansfield University of Pennsylvania Search for other works by this author on: Oxford Academic Google Scholar Mark Schwartz, Mark Schwartz University of Pennsylvania Search for other works by this author on: Oxford Academic Google Scholar Samuel Wagner Samuel Wagner University of Pennsylvania Search for other works by this author on: Oxford Academic Google Scholar The Economic Journal, Volume 91, Issue 364, 1 December 1981, Pages 907–918, https://doi.org/10.2307/2232499 Published: 01 December 1981
Mansfield et al. (Tue,) studied this question.