Mr Will Lewis, an international business law and IP rights student at University of San Diego School of Law, tells on his blog Experience not logic that he was given a slew of data on IP litigation between domestic parties and between a domestic party and a foreign party in Beijing, Guangzhou, Jiangsu and Zhejiang courts. He posted the data and let readers interpret it for themselves. Later in the week, Mr Lewis will post his interpretation to the data along with other's interpretations.
Find the IP litigation data on these courts in Mr Lewis' article China IP Litigation Data: What Does it Mean? on his interesting blog called Experience not logic quoting Oliver Wendell Holmes, Jr.
UPDATE: Mr Lewis has interpreted the data and comes to the conclusion that although the data are inconclusive, they at least suggest that businesses should not be scared about an inability to protect their IP in China. Read Mr Lewis interpretations here.