中文摘要：

跨国技术授权作为企业获得竞争优势的重要途径已经受到理论界的关注。与以往的内部技术授权研究不同，文章构建了一个外国拥有技术的企业与东道国企业的空间数量歧视竞争模型，考察多期技术授权存在技术泄露、关税内生及空间竞争对外国拥有技术的企业的最优授权策略选择以及东道国社会福利的影响。研究表明：（1）外国拥有技术的企业偏好双重收费方式，且固定收费方式优于特许权收费方式；（2）双重收费方式不能同时实现拥有技术的企业和社会福利的最优，但可以实现社会福利的次优；（3）外国企业应该通过双重收费方式或固定收费方式进行技术授权，而东道国政府不应一味地提高关税水平，适当地降低进口关税有利于跨国技术授权的实现。文章的结论对于发展中国家的技术引进以及技术出口政策的制定具有一定的现实意义。

英文摘要：

Transnational technology licensing has caught much attention from scholars due to its role as an important tool to obtain competitive advantages. Different from previous studies on internal technology licensing, this paper constructs a spatial quantity discrimination competition model between foreign firms that own the technology and local firms in the host country to analyze the effects of technology leakage under multi-period technology licensing, endogenous import tariffs and spatial competition on the selection of optimal licensing strategies of foreign firms that own the technology and the social welfare of the host country. It arrives at the detailed conclusions as follows： firstly, foreign firms that own the technology prefer dual charge mode and fixed fee is better than royalty fee; secondly, the dual charge mode cannot lead to the optimization of foreign firms that own the technology and social welfare simultaneously, but social sub-optimization; thirdly, foreign firms that own the technology should implement technology licensing through dual charge or fixed fee mode; the governments in the host country should not raise tariffs blindly,and proper reduction in import tariffs is beneficial to the realization of transnational technology licensing. The conclusions are of some reality significance to technology introduction and the formulation of technology export policy in developing countries.