The patent EP4286082B1 was granted to Sumitomo Electric Hardmetal on Aug 13, 2025 following the initial filing on Jun 2, 2021 under the application number EP21944115A . The current legal status of the patent is 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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