China's YMTC wins patent battle against Micron in ongoing 3-year legal war over memory patents
A Munich court has granted YMTC two injunctions against Micron over 3D NAND patents, the latest development in a years-long cross-border legal battle between the memory rivals.
In a recent legal victory, Chinese semiconductor company YMTC secured court injunctions against rival Micron, marking progress in their three-year patent battle over memory technology. Germany's court ruled that Micron infringed on YMTC's 3D NAND technology patents in two instances, potentially limiting Micron's supply in the European market.
Micron has contested the ruling, filing an appeal and challenging the patents' validity in legal cases across various countries. The dispute began in late 2025 at Munich 1 Regional Court, with YMTC filing five cases involving four German utility models and a European patent. Two of the utility models, DE202020006166U1 and DE202021004551U1, have received 10-year protection periods.
The injunctions are initial rulings that can be suspended if Micron successfully appeals. This development is part of a broader, multi-front legal conflict spanning over 20 patents between the two companies, involving jurisdictions in China, the U.S., the U.K., Germany, and other European regions.
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