1. Fundamental stocks of knowledge and productivity growth;Adams;J. Political Econ.,1990
2. Valuable patents;Allison;Geo. Lj,2003
3. How often do non-practicing entities win patent suits?;Allison;Berkeley Technol. Law J.,2017
4. Extreme value or trolls on top-the characteristics of the most-litigated patents;Allison;Univ. Pa. Law Rev.,2009
5. Patent quality and settlement among repeat patent litigants;Allison;Geo. LJ,2010