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The firm survival risk is essential to intellectual property strategy implementing in China, however only a few studies focus on this problem. The paper investigates the effect of intellectual property rights protection system (IPR) on survival risk. Specifically, we use an event history analysis to track 8486 firms entering the market from the year 2000, and employ computing methods of the time-dependent Cox model. One important finding from this study is that the survival risks of R&D firms can be reduced approximately 22.57% by every additional unit of intellectual property, and the marginal effect raises to 28.33% with the exclusion of the administrative factors. Another important finding is that the relationship between IPR protection and survival risk is affected by R&D revenue. Finally, the survival risk for all those firms with substantive innovation rather than strategic innovation can be greatly affected by IPR system. [ABSTRACT FROM AUTHOR]

Prolific inventors not only own higher innovation productivity, but also impact other inventors through innovation networks. This paper contributes to existing literatures by differentiating prolific inventors from non-prolific inventors in the network context, and making an empirical analysis of the effect of prolific inventors. We use the patent filing data from the State Intellectual Property Office of China (SIPO) in investigating the effect of prolific inventors on firm innovation. We use the patents filed by 10 largest Information & Communication Technology firms during 1995–2010 and establish the innovation network with patent co-inventing data. The empirical result shows that prolific inventors positively impact their partners who used to co-invent at least one patent with them. Furthermore, prolific inventors positively impact inventors who do not have a close contact with them. The closer the inventors are to prolific inventors, the more patents they produce. Members are thereby more likely to gather around prolific inventors and formulate intensive clusters. In networks centered by prolific inventors, useful knowledge outweighs redundant knowledge, and high clustering that facilitates knowledge flow is proved to be beneficial; while in networks without prolific inventors, high clustering may not be beneficial as there are less inventors holding advanced knowledge. Policy implications are discussed at the end of this study. [ABSTRACT FROM AUTHOR]