专利许可是企业专利战略中的最核心部分之一，专利联盟正不断涌现，专利联盟成员企业的独自专利许可投入决策是本文的研究问题。研究表明，联盟成员独自许可投入对联盟许可收益的影响、对自身其他专利收入的影响、对其他联盟成员收益的影响、联盟成员的联盟收益分配比例等，都会对最优独自许可投入产生影响。而联盟成员之间独自许可的替代影响不会对最优许可投入产生影响。

Abstract: Patent licensing is the core of patent strategy, and the patent alliances are emerging more and more. The patent alliance member’s patent licensing investment strategy is studied. It is shown that the following aspects have clear influence on the alliance member’s optimal investment in licensing respectively: the effect of alliance member’s investment in licensing on the return increment of the alliance, on its return from other patents, on the return of other alliance members, and its share among the total alliance’s return. The substitutive effects of each member’s investment in licensing show no influence on the optimal investment.