Patent No. EP4553586 (titled "Method For Manufacturing A Return Spring With Precise Stiffness For A Timepiece Resonator") was filed by Patek Philippe Genve on Nov 8, 2023. The application was issued on May 14, 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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