Abstract: Option game is taken into the research of enterprise patent investment, and asymmetric duopoly model is established to examine the optimal investment decision-making behavior of patent based on the theory of option game. Further, the investment of patent and Nash equilibrium with numerical research is analyzed. The results show that patent investment should be considered with uncertainty, irreversibility and competitive impact. Not only the management of flexible value but also the competition impact in a framework should be considered to find the optimal patent investment strategy.

Key words: option game, asymmetric duopoly, corporate patent