臺灣博碩士論文加值系統

專利是企業的重要智慧財產權，企業使用專利侵權訴訟進行維護智慧財產權的利益，或騷擾競爭對手，已成為企業創新管理常見的議題。過去此類研究僅聚焦在發生專利訴訟事件前後的股價異常報酬變化，但並未針對事件的輕重程度進行探究，是否當索賠金額愈大時，專利訴訟的嚴重性亦愈形更盛?本研究使用事件研究法，驗証當專利侵權訴訟案件且要求首次索賠金額的訴訟雙方公司之股價異常報酬的變化；並進一步使用橫斷面迴歸分析，以首次索賠金額為自變數衡量其對市場價值變化的影響。結論如下：一、當專利侵權訴訟案件發生時，被告公司的股價異常報酬負向顯著下降；而原告公司的股價異常報酬雖正向上升，但未達顯著水準；二、當原告公司首次索賠金額愈大時，則被告公司的企業市場價值下降愈顯著；三、當被告的公司獲利力愈高時，愈能緩衝市場價值下降的幅度。

The continual application of patents and the use of patent infringements against competitors have become common practices in the protection of a firm’s intellectual property right.
Prior studies merely focused on patent infringements against firms’ abnormal return. Less attention attempted to clarify the relationship between the effect of severity of a patent infringement and the firm’s market value. This study uses the method of event study to examine the impact of patent lawsuit filing in an initial claim on the change of market value for both the defendant and plaintiff firms. Besides, we further tested the relative influence of an initial claim in terms of dollar amount on the defendant’s stock abnormal return through a cross-sectional regression. The empirical evidences indicate: (1)The defendants’ market value declined significantly when facing patent infringement lawsuits, but the plaintiff firms experienced no significant gains. (2)The larger the initial claims that the plaintiff filed, the more significantly the defendant’s market value declined. (3)A firm’s financial return helps buffer the decline of its market value.

摘要...i
Abstract...ii
誌謝...iii
表目錄...vi
圖目錄...vii
第壹章 緒論...1
第一節 研究背景與動機...1
第二節 研究問題與目的...4
第三節 研究流程...6
第貳章 文獻回顧...8
第一節 專利訴訟原告與被告雙方間不對稱財富效果...8
第二節 專利訴訟的負向效應...16
第三節 專利訴訟與企業市場價值...19
第參章 研究方法...23
第一節 研究架構...23
第二節 研究期間、對象與資料來源...24
一、研究期間及對象...24
二、資料來源...24
第三節 樣本搜尋過程與篩選原則...25
一、樣本搜尋過程...25
二、樣本篩選原則...26
第四節 分析方法...28
一、事件研究法...28
(一)事件期間...29
(二)異常報酬的估計...30
(三)異常報酬的檢定...31
(四)檢測方法...32
二、橫斷面迴歸模式...34
第肆章 資料分析...39
第一節 被告公司樣本之事件研究法分析...39
一、全體被告公司在事件期(-10,+10)之實證分析...39
二、全體被告公司在事件期(-5,+5)之實證分析...43
第二節 原告公司樣本事件研究法之分析...46
一、全體原告公司在事件期(-10,+10)之實證分析...46
二、全體原告公司在事件期(-5,+5)之實證分析 48
第三節 專利訴訟索賠金額對市場異常報酬的影響...49
第伍章 結論與建議...55
第一節 結論...55
第二節 實務意涵...58
第三節 研究限制及建議...59
參考文獻...60
一、網路資料...60
二、中文文獻...60
三、英文文獻...61
附錄...66

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台灣經濟新報資料庫，http://www.tej.com.tw/twsite/。
台灣司法統計，http://www.judicial.gov.tw/juds/index1.htm。
法源法律網，http://www.lawbank.com.tw/index.php。
科技產業資訊室，http://cdnet.stpi.org.tw/。
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