The Empirical Studies on the relations between firm's standard-setting strategies and patent portfolios

在这项研究中，我聚焦于在最近的信息和电信(IT)行业中扮演着重要角色的接口标准，以检验S公司的标准制定策略。在IT行业中，由于接口标准由各种技术组件组成，因此标准制定策略是企业之间各种技术知识的(事前)协调。在这方面，笔者认为硬件企业和软件企业之间的并购活动在最近的IT行业中发挥了重要的作用，并且这些并购活动对企业S的标准制定策略产生了影响。此外，我还拿起了DVD标准制定案，并建议S公司的标准制定战略取决于S公司在本案中的专利组合。更具体地说，利用Hall，Jaffe&Trajtenberg提供的美国专利数据库中的专利引文数据，分析了相关公司的标准制定行为和专利组合。研究结果表明：(1)对原有CD格式的承诺决定了DVD格式的标准制定行为；(2)这种承诺的有效性取决于相关企业的技术资产(以专利组合为代表)。

In this study, I focus the interface standards which play a important roles in the recent information & telecommunication(IT) industries, in order to examine the firm s standard-setting strategies. In the IT industries, because the interface standards are composed of various technological components, the standard-setting strategies are the (ex-ante) coordination of the various technological knowledge between firms. On this respect, I shows that the merger & acquisition activities between hardware firm and software firm play important role in the recent IT industries, and that these M&A have an influence on the firm s standard-setting strategies. Moreover, I pick up the DVD standard-setting case and suggest that the firm s standard-setting strategies depend on the firm s patent-portfolios in this case. More concretely, using the patent-citation data of the U.S. patent database which are provided by Hall, Jaffe & Trajtenberg, I analyze the standard-setting behaviors and the patent portfolios of the related firms. The following two results are derived : (1)the commitment on the former CD format decides the standard-setting behavior on DVD format, (2)the effectiveness of this commitment depends upon the technological assets (which are represented by patent portfolios) of the related firms.