Germany · China · California · Tom's Hardware
China's YMTC wins patent battle against Micron in ongoing 3-year legal war over memory patents
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A court in Germany has granted court injunctions against Micron, marking a win for YMTC on the European/German front in the 3-year legal war between the two companies over memory technology patents.
Key facts
- The court granted injunctions on two of the utility models with 10-year protection periods, DE202020006166U1 (case No. 7O12615/25) and DE202021004551U1 (case No. 12614/25), and adjourned the others
- YMTC filed the lawsuit that won the recent injunctions in late 2025 at the Munich 1 Regional Court, opening five cases involving four German utility models and a European patent
- According to a Digitimes report, the court ruled on Sept. 18 that Micron did infringe YMTC’s 3D NAND technology patents in two instances
- The ruling is the latest development in a years-long dispute between the two memory makers that started in 2023 when YMTC sued Micron in California, alleging violations of eight 3D NAND architecture
Summary
According to a Digitimes report, the court ruled on Sept. 18 that Micron did infringe YMTC’s 3D NAND technology patents in two instances. America’s AI chip rules keep changing, and the rest of the world is paying the price. GTC 2026: Ian Buck press Q&A transcript, VP of Hyperscale and HPC speaks out on shelving CPX and shipping LPU decode this year. Demand for data center CPUs has surged, and AI agents are responsible.