For more information:
- USPTO Online Database: used to collect the data on patents and their corresponding invention and assignment states.
- US Census Regions Map: provides a simple map of how the US Census regions are divided.
- USPTO General Information Concerning Patents: Answers basic questions about patents including defining patent assignment, patent laws, and how patents are awarded.
- An Introduction to the Law and Economics of Intellectual Property: an article in the Journal of Economic Perspectives, which offers a good overview to how the patenting system promotes innovation.
- The Geographic Sources of Innovation: an article by Richard Florida from the Annals of American Geographers which, in part, details why innovation is important and what factors promote a successful innovative economy.
