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Public PAEs are under performing the market (based off share price). If PAEs are not making enough money, will they become desperate and sue more firms, or reduce their assertion activities because of high court costs?[http://www.rpxcorp.com/wp-content/uploads/sites/2/2015/12/RPX-Public-PAE-Report-Q3-2015-Final.pdf]
===Lanjouw & Schankerman: Protecting Intellectual Property Rights: Are Small Firms Handicapped? (2004)===
====Findings====
*"Both trading patents and repeated interaction are important for patent dispute resolution."
*"As a consequence, small firms are at a disadvantage in terms of their ability to protect their patent rights."
*"The total number of patents grew by 71 percent over the period, but in drugs, biotechnology, and medical instruments patenting nearly tripled, and in computers it grew fourfold. Once the growth in patenting is taken into account, the table demonstrates that there has been no trend increase in the filing of suits in any technology field over this period."
*"The first column of Table 3 shows that the probability of litigation sharply declines with portfolio size."
[[Image:Lanjouw-Schankerman_Table_3.png | 400px]]
====Data Sources====
*"We identify litigated patents from the LitAlert database produced by Derwent [internal note: now Thomson Reuters], a private vendor. This database is primarily constructed from information collected by the U.S. Patent and Trademark Office (PTO). The data used include 13,625 patent cases filed during the period 1978–99"
*"We then matched the Derwent data to information on all U.S. patent-related cases (those coded 830) from the court database organized by the Federal Judicial Center (FJC)."
====Critiques====
====Other Findings====
