Abstract：The Microsoft case, Google case and Baidu case all reflect the inevitable uncertainty to define the relevant markets in internet industry in many countries’ antimonopoly judicial practice. Demand substitutability method and supply substitutability method are always being applied to define relevant markets in transitional industry,which cannot incarnate the two-sided markets characters of internet products or services, thus when they，applied to define relevant markets in antimonopoly case, there are several obvious shortcomings. To make up these obvious shortcomings and to break through the bottleneck of defining relevant market in internet industry, we should neither copy the traditional methods, nor be completely bound by the provisions of the Anti-monopoly Law．We should take into account the two-sided market characters of internet industry, treat the different functions of different internet products or services objectively, define relevant markets from the perspective of profit sources, and we must consider the transferring effect of cross-group network externality in two-sided markets to monopoly power.
——基于双边市场条件[J]. 法学家, 2012, 0(6): 58-74.
JIANG Yan-Bo. On the Judicial Dilemma and Countermeasures to Define Relevant Markets in Internet Industry：From the Perspective of the Two-sided Markets. , 2012, 0(6): 58-74.