| Summary: | 博士 === 朝陽科技大學 === 企業管理系台灣產業策略發展博士班 === 106 === All countries in the world have started fierce technical competitions around the development of LED since 2000, and patent infringement has occurred from time to time, which has also triggered a large-scale patent war. Identifying the position of the firm in the litigation relationship becomes an important issue in the implementation of the litigation strategy of "Know the enemy, know yourself". In addition, the flow of technological knowledge hidden behind the patent becomes the primary solution to patent layout of the enterprises. Previous studies have mostly focused on assessing the number and quality of patents held by companies to provide information on patent portfolios and assessments. Due to factors such as security, the research based on patents tends to have limited access, patent litigation is easy to access and reflects the importance of the patents well even with a small number of cases. Therefore, this study proposes new ideas on the basis of patent litigation data, two aspects such as the patent litigation network constructed by litigation subject and the patent citation network constructed by litigation object.
This study collected data on LED patent litigation between 2000 and 2016. Firstly, the litigation subject information was extracted and the patent litigation network was constructed. The research on the role of patent litigation network was completed through three steps of network centrality analysis, multivariate analysis and of position & role analysis. The results show that LED litigation companies can be divided into four groups which label leaders, core competitors, Non-practicing entities and potential threats, with good effect of clustering and be consistent with market position of the enterprise. Then, the object of litigation was extracted and the patent citation network of the country, the institution and the technology was built. The structure and properties of the patent citation network were analyzed in depth through three aspects: network visualization, network topology analysis and key nodes analysis. The results show that the distributions of the three patent citation networks follow the power law distribution and belong to the scale-free network. The United States, Japan, the Netherlands, Germany and South Korea are the key nodes in the country citation network. The most important nodes in the institution citation network is Philips, Cree, Nichia, Osram, Seoul Semiconductor and GE, H01L, F21V and H05B are the key nodes in the technology citation network.
The new perspective of research not only can provide enterprises with the management opinions of patent litigation strategy and patent layout, but also can provide structural approach and small sample research ideas for follow-up theoretical research so as to improve the reliability and validity of the research.
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