AEM files PTAB reviews challenging validity of patents in Advantest infringement suit

• AEM faces an Advantest patent-infringement suit in the U.S. District Court for the Southern District of California.
• Claims center on U.S. Patent Nos. 11,674,999 and 12,320,841.
• Court order dated June 29, 2026, found the original complaint failed to plead direct or indirect infringement adequately.
• Hearing on AEM’s motion to dismiss the amended complaint was vacated Sept. 23, 2026; the judge will rule on written submissions.
• AEM filed PTAB inter partes review petitions challenging both patents; it expects no material impact on operations or finances.

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