试论市场支配地位的认定问题

认定市场支配地位是反垄断法律分析的一个关键因素.经济学对市场支配地位的测算主要是计算一个企业的林纳尔系数.林纳尔系数越大,垄断力越强.市场占有率的高低是衡量市场支配地位的一个测量指标.但高占有率并不必然导致认定市场支配地位.实践中还需要综合分析市场进入障碍、市场行为特点等相关因素,最后认定市场支配地位.

Issues concerning the Determination of Dominant Position in the Market

The determination of dominant position is the key point in antitrust analysis. The measurement of dominant position in economics is based on the calculation for the Lerner Index. The higher the Lerner Index is, the stronger the monopoly power is. Market share is an important index in measuring dominant position. However, there is no absolute connection between market share and dominant position. Some other related issues, such as entry barriers and features of market behavior should, in practice, be analyzed before dominant position is determined.