Patent No. EP3884487 (titled "Mamr Recording Head With High Damping Trailing Shield Seed Layer") was filed by Western Digital on Mar 18, 2020. The application was issued on Aug 13, 2025.

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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