竞争性专利联盟的形成分析

已有对专利联盟形成问题的研究假设产业中仅能形成一个专利联盟，这样的联盟具有垄断性，但与现实产业中存在多个专利联盟的情况不符.此外，已有研究仅讨论了产业中大量互补性专利对联盟形成的影响，忽略了可替代性专利存在的事实.为此，在大量互补性和可替代性专利存的前提下，构建了单一联盟和双竞争性专利联盟形成的概率模型，对专利联盟形成进行分析.研究发现，产业内专利总量和专利研发企业所拥有的专利数量是专利联盟形成的关键性因素，在组建专利联盟时，不仅要考虑专利类型，更应考虑到专利数量.

Analyses of Formation of Competitive Patent Pools

The theoretical analyses of patent pools almost exclusively assume that only one patent pool is in one market， so this patent pool is a monopoly. In the other hand， the theoretical analyses also assume that before the formation of patent pools， there were many complementary patents in one market. Many substitutability patents， however， were not considered in one market. However these assumptions are far from the fact of patent pools. The probability model of the formation of the patent pools was developed at the cases that one market could have two patent pools and many substitution patents. Why the number of patents is a key factor in formation of patent pools was explained and it could be concluded that when building patent pools， the type of patents should not be considered， neither could the number of patents.