德国慕尼黑第一地区法院第七民事庭于9月18日作出裁决，认定美光侵犯了长江存储持有的两项德国实用新型专利，并颁布禁令要求美光停止在德国销售相关侵权产品1。涉案专利分别为DE202020006166U1（三维存储器件的阶梯结构）和DE202021004551U1（三维NAND存储器中字线接触的阻挡层）1。这是双方自2023年11月专利战全面爆发以来，长江存储取得的首个实质性禁令胜利1。
美光对该判决表示不认同，已正式提起上诉1。美光强调德国实用新型未经实质审查，最长保护期限仅为10年，并表示正挑战相关权利的有效性1。同日法院还延期审理了另外三起诉讼，涉及专利DE202018007011U1、DE202022003278U1以及欧洲专利EP39318681。
根据最新数据，长江存储在全球NAND Flash市场中按销售金额与出货量排名均位列第三1，已授权专利达6088项，其中发明专利5611项，Xtacking架构相关发明专利超过2000项1。
Yangtze Memory Technologies has achieved its first substantial patent injunction victory against Micron Technology in their ongoing dispute over 3D NAND flash memory technology.1 On September 18, 2024, the Munich Regional Court, First Judicial District, ruled that Micron infringed two of Yangtze Memory's German utility model patents and issued an injunction prohibiting Micron from selling the infringing products in Germany.1
The court's decision targeted two specific patents: DE202020006166U1, covering the stepped structure design of three-dimensional memory devices, and DE202021004551U1, addressing the barrier layer for wordline contacts in 3D NAND storage.1 This ruling marks a turning point in the patent litigation that escalated globally in November 2023 between the two memory chip manufacturers.1 Yangtze Memory currently ranks as the world's third-largest NAND Flash producer by both sales revenue and unit shipments.1 The company has secured 6,088 authorized patents worldwide, comprising 5,611 invention patents, with more than 2,000 patents related to its proprietary Xtacking architecture.1
Micron has rejected the judgment and filed an appeal.1 The company challenged the ruling by emphasizing that German utility model patents do not undergo substantive examination and carry a maximum protection period of ten years.1 The same court postponed hearings on three additional related lawsuits involving patents DE202018007011U1, DE202022003278U1, and European Patent EP3931868.1
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