Appendix for “ Do Stronger Intellectual Property Rights Increase International Technology Transfer ?

In constructing our sample, we started with the work of Maskus (2000), who used the National Trade Estimates Reports on Foreign Trade Barriers and other publications to identify a series of significant patent reforms. Since this set of reforms does not appear to be exhaustive, we consulted two additional sources. Qian (2004) provides a list of countries that made substantial changes to patent law as it applies to the pharmaceutical industry. Ginarte and Park (1997) provide a time varying index of the strength of patent law, and it is possible to use an updated version of this index to identify countries that appear to undergo reforms. These sources identify 42 reforms that took place during the 1982-1999 period that is covered in our sample.