● Covered by 1 source · 1 reportMedium impact1 neutral
Germany rules YMTC's 3D NAND patent infringement claims against Micron are valid
Key points
- German court ruled Micron infringed two YMTC 3D NAND patents.
- Injunctions could restrict Micron's supply in Germany.
- Micron has filed an appeal against the ruling.
- Legal battle involves over 20 patents across multiple countries.
German Court Rules in Favor of YMTC
A German court has granted injunctions against Micron, finding that the company infringed on two of YMTC’s 3D NAND technology patents. The ruling, issued on September 18, follows a lawsuit filed by YMTC in late 2025 at the Munich 1 Regional Court.
Potential Market Impact
These injunctions could lead to restrictions on Micron's supply within Germany and potentially affect the wider European NAND market. Micron has stated its disagreement with the court's decision and has already initiated an appeal process.
Ongoing Legal Conflict
This ruling is part of a three-year legal conflict between YMTC and Micron, which began in 2023 when YMTC sued Micron in California over alleged violations of eight 3D NAND architecture patents. The dispute has expanded to include over 20 patents, with lawsuits and countersuits filed in China, the U.S., the U.K., Germany, and other European countries.
Micron's Response and Challenges
Micron denies any wrongdoing and has filed multiple patent invalidation challenges since 2024. Seven of the disputed patents have already been declared invalid in separate legal cases. Micron continues to challenge the validity of related patents in various jurisdictions.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
A German court issued injunctions against Micron, ruling it infringed on two of YMTC's 3D NAND technology patents. This decision could impact Micron's supply in Germany and the broader European NAND market, escalating a multi-year global legal dispute between the two memory manufacturers.