ThinkPad, whose Chinese name is "thinkbook", was a portable computer brand under the IBM PC department before 2005, and enjoyed a high reputation in the industry for its solid and reliable characteristics. After Lenovo acquired the IBM PC division, the ThinkPad trademark was owned by Lenovo.

From June 5438 to February 8, 2004, Lenovo acquired IBM's global PC technology, and within five years, it had the right to use IBM's brand according to relevant agreements, and completely obtained trademarks and related technologies, which made Lenovo's products have the widest brand awareness in the global PC market.

In this M&A incident, Lenovo completed a comprehensive acquisition of IBM's personal computer division, that is, IBM's ThinkCenter desktop computer and ThinkPad notebook computer are all under Lenovo Group. However, due to the strategic cooperation with IBM, the system of IBM's original PC department will not change much, so it will not have any impact on ThinkCenter, ThinkPad and other product lines.