Few empirical studies have addressed the impact of the patent system on industry structure. Using firm-level patent data for firms in plant biotechnology, we develop a measure of patent enforceability. Duration models show that patent statistics are useful predictors of the timing of...

Few micro-level empirical papers have addressed the impact of the patent system on industry structure. Using firm-level patent data for public and private firms in plant biotechnology, we develop a measure of patent enforceability. Duration models show that patent statistics are a useful...

Many recent empirical studies have examined the effect of the patent system on R&D, innovation and patenting behavior. However, few micro-level empirical papers have addressed the impact of the patent system on industry structure. In this paper we build on our previous work to investigate merger...

Few empirical studies have addressed the impact of the patent system on industry structure. Using firm-level patent data for firms in plant biotechnology, we develop a measure of patent enforceability. Duration models show that patent statistics are useful predictors of the timing of...

The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 90, Number 1, February 2008.