The patent EP4534231 was granted to Taiwan Mask on Sep 17, 2025. The application was originally filed on Oct 6, 2023 under application number EP23202120A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

The dossier documents provide a comprehensive record of the patent’s prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent’s legal journey and any challenges it may have faced during examination.
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