YKK株式會社從1934年成立以來就一直致力於拉鏈的自製自銷，甚至連拉鏈的機器設備，也都自行研發與設計，創造出許多好品質的拉鏈，對於這將近百年的企業，生產量佔全球市場約三分之一的拉鏈，由於紡織成衣業的興起，競爭對手相繼的出現，尤其是中國區的競爭者，YKK是如何面對，本研究以台灣、中國、美國及日本的商標資料，進行資料分析。研究發現YKK在商標上的策略是以一主多輔為其策略，以\"YKK"品牌商標為主，其他商標為輔，跨類進行商標註冊，並分別在不同類別申請防禦性商標，產品商標、核心商標及經營理念商標等為其商標策略之重點。再透過以全球的觀點佈局，依其海外的姊妹社之競爭優勢為其商標佈局，以母公司的經營策略的方式在進行，連結形成一個全球的企業網。

Since YKK Co. Ltd establishment in 1934, they fully committed their energy on self-making and self-selling their zippers. Even machinery and equipment were all designed and developed by their own research to create the best quality zippers for customers. YKK is almost one century old and is producing about one-third of the zipper in the global market. There are many emerging competitors especially from China due to the rise of textile and garment industry. How did YKK face this situation? The study was based on Taiwan, China, the United States and Japan's trademark information for data analysis. This study discovered YKK's strategy was "one major brand, many flank brands". The method was using "YKK"as the major brand and other trademarks were supportive roles. "YKK"was used for cross-category trademark registration, and focused on defensive trademarks /product trademarks, and core trademarks registered on different category. Viewing from a global perspective, each oversea branch office used their resources to assist parent company to form a global enterprise network.