本研究旨透過自行車訴訟案件內的專利，了解在具有爭議的技術領域中，自行車公司的核心技術以及同類技術之間的創新表現。訴訟案件由LexisNexis資料庫搜尋而得，再據此訴訟專利，透過USPTO和INPADOC資料庫取得相同技術領域的專利以作為專利優先權分析和專利組合分析的樣本。自行車公司的核心技術以專利優先權分析訴訟專利得出。而後續的專利組合分析，本研究蒐集與核心技術相同國際分類號（IPC）的專利做為分析標的，更進一步地將專利的品質指標透過主成分分析，辨識出適合用於專利組合的關鍵面向。並據此關鍵面向，繪製出這些相同技術領域的專利在國家、公司、國內優先權和前引證之間的散佈圖。經由本研究的分析，自行車公司不僅能夠瞭解過去十年間自行車產業的技術發展趨勢，更能夠瞭解在具有爭議的技術領域中所屬專利的創新表現。

To understand the core technologies of bicycle companies and their competitiveness in key technology fields, this study adopts the approaches of patent priority and patent portfolio to analyze the patent data collected from INPADOC and USPTO. The most recent litigated patent was identified first from LexisNexis. Core technologies of a bicycle company were then derived from the litigated patent by patent portfolio analysis. For the analysis of patent portfolio, patents having same IPCs as the core technologies were collected and examined. Besides, principal component analysis was applied on patent quality indicators to identify key patent portfolio subjects. Scatter plots were then pictured by country, company, domestic priority claim and forward citation from derived key patent portfolio subjects. From the findings of this study, bicycle companies not only acknowledge their technological development trend, but also understand their innovative performance in the disputed technological field.

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