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German court grants YMTC injunctions against Micron in NAND patent fight

German court grants YMTC injunctions against Micron in NAND patent fight

Rule Changes

First-instance rulings in a three-year patent war spanning the US, UK, Germany, and the Unified Patent Court

September 18th, 2026: Munich court grants injunctions against Micron

Overview

Updated 1 hour ago

A German court on September 18 ordered Micron to stop selling certain 3D NAND memory products in Germany. The ruling, over two utility-model patents owned by Chinese chipmaker Yangtze Memory Technologies (YMTC), is the first substantive win in a three-year patent war spanning five jurisdictions.

Micron has appealed, and the rulings are first instance, so nothing is final. Enforcement could begin before the appeal is decided unless a higher court stays the orders. If enforced, the injunctions would block affected Micron NAND chips, including those inside Crucial solid-state drives and third-party laptops, from the German market.

Why it matters

If the injunctions hold on appeal, Micron's 3D NAND flash could be barred from Germany, disrupting European SSD and laptop supply chains.

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Key Indicators

2
German injunctions granted against Micron
First-instance rulings from the Munich I Regional Court on September 18, 2026.
27
Patents in YMTC's US suits against Micron
YMTC's US litigation expanded to 27 patents and 295 claims by July 2026.
295
Patent claims in YMTC's US cases
Claims asserted in the same July 2026 expansion of YMTC's US litigation.
$41.456B
Micron quarterly revenue
Revenue for the quarter ended May 2026, before the German rulings, per Micron's earnings.

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Timeline

November 2023 September 2026

4 events Latest: September 18th, 2026 · 1 week ago
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Scenarios

1

Appeals court upholds injunctions, Micron's NAND exits German market

Possible Resolves by Q2 2027

Discussed by: ip fray and TrendForce reporting

The Munich Higher Regional Court declines to stay the injunctions, so enforcement begins during the appeal. Affected Micron NAND products leave German shelves, and laptop and drive makers using Micron flash must find alternatives. If YMTC later wins the pending cases over two other utility models and a European patent, the exclusion could broaden.

2

YMTC and Micron settle with a licensing deal

Likely Resolves by End of 2027

Discussed by: SharpPost market analysis, cited by Ruibao News

Facing rulings across Germany, the Unified Patent Court, the UK, and the US, both sides agree to a 3D NAND licensing arrangement. Micron keeps selling in Germany in exchange for royalties, and YMTC gets revenue without more litigation. The price would reflect the weight of a German ban against Micron's cash position.

3

Appeals court reverses injunctions, Micron cleared in Germany

Possible Resolves by Q2 2027

Discussed by: Not publicly forecast; based on the utility models' vulnerability to validity challenges

The Higher Regional Court reverses one or both infringement findings, possibly by invalidating the utility models. Because utility models are registered without substantive examination, they are easier to attack in validity proceedings. The court could also find that Micron's specific products do not practice the claimed staircase or barrier-layer structures.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

April 2011 – 2018

Samsung v. Apple (2011–2018)

Apple sued Samsung in April 2011 over smartphone design and utility patents. The fight ran through courts in the US, Germany, South Korea, Japan, and the EU, with results varying by jurisdiction: a German ban on Samsung tablets in 2011, a $1.049 billion US jury verdict in 2012 that was later reduced.

Then

The German tablet ban was lifted after Samsung modified the product. The US damages award was cut on appeal, and the companies settled in 2018.

Now

The case became the standard example of tech patent wars crossing jurisdictions with inconsistent outcomes, pushing rivals toward settlement.

Why this matters now

It shows that a win in one country does not guarantee others, echoing YMTC's mixed German record of two wins and two cases adjourned.

January 2017 – April 2019

Apple v. Qualcomm (2017–2019)

Apple sued Qualcomm in January 2017, accusing the chip supplier of overcharging for patents and demanding about $1 billion in rebates. Qualcomm countersued, and courts and regulators in the US, Germany, China, and elsewhere issued conflicting orders. In September 2018, a Munich court banned sales of some iPhone models, and Apple pulled them from German stores.

Then

The companies settled in April 2019. Apple paid an estimated $4.5 billion and signed a six-year patent license, ending the threat of country-by-country iPhone bans.

Now

The deal preserved Qualcomm's licensing model and set the pattern for large supplier-patent fights that run across borders before ending in a settlement.

Why this matters now

Like Micron-YMTC, the conflict produced sales bans in individual countries that forced the parties to settle globally.

Sources

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