文化大學機構典藏 CCUR:Item 987654321/48813
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    題名: Patent Litigation, Competitive Dynamics, and Stock Market Volatility
    作者: Shih, KH (Shih, Kuang-Hsun)
    Yang, FJ (Yang, Fu-Ju)
    Shih, JT (Shih, Jhih-Ta)
    Wang, YH (Wang, Yi-Hsien)
    貢獻者: 財金系
    關鍵詞: patent infringement lawsuits
    market commonality
    resource similarity
    日期: 2020-05
    上傳時間: 2020-11-09 13:47:56 (UTC+8)
    摘要: Recently, the number of patents of enterprises has been increasing year by year, obviously improving the degree of attention paid to the added value of patents by said enterprises, but also creating patent infringement lawsuits. First, through analysis of the position of competitors, it can be seen that the disclosure of patent infringement litigation information influences the abnormal returns of shareholder wealth. Second, through projecting to competitive dynamics, it could be determined whether expected or actual action are consistent or inconsistent, and whether the stock returns and volatilities are obviously changed. This work utilized event study and GJR-GARCH to discuss the information value of short-term abnormal returns and the long-term effect of stock returns and volatilities of patent infringement lawsuits, respectively. The empirical results of this article highlight the significantly negative short-term abnormal returns of plaintiffs when market commonality between the enterprises was higher. In addition, the cumulative abnormal returns of shareholders were reduced when the resource similarity was higher. Finally, in terms of the corresponding plaintiff enterprises, if the expected theory and the actual strategy were inconsistent, then the return and the risk decreased significantly; however, when the strategy was consistent, the return and the risk increased significantly.
    關聯: MATHEMATICS 卷冊: 8 期: 5 文獻號碼: 795
    顯示於類別:[財務金融學系 ] 期刊論文

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