Abstract Count data regressions are an important tool for empirical analyses ranging from analyses of patent counts to measures of health and unemployment. Along with negative binomial, Poisson panel regressions are a preferred method of analysis because the Poisson conditional fixed effects...

Compulsory licensing allows firms in developing countries to produce foreign-owned inventions withoutthe consent of foreign patent owners. This paper uses an exogenous event of compulsory licensingafter World War I under the Trading with the Enemy Act to examine the long run effects of...