Abstract: This paper investigates the determinants of the formation of patent pool from two aspects, i. e. , technology diversification and network positions by adopting the USPTO retrieved 166 companies in the DVD industry as research samples. It argues that the network positions play a moderating role in affecting the relationship between corporate diversified technology and the formation of patent pool. The results suggest that the higher degree of enterprises diversified technology the more easily join the patent pool. The more central and intermediary positions in the network, the greater probability of added patent pool. Meanwhile, the network centrality and intermediary play a positively moderating the relationship between diversified technology and the formation of patent pool.