Patent No. EP3480578 (titled "Sample Surface Creation Method, Sample Surface Analysis Method, Probe For Electric-Field-Assisted Oxidation, And Scanning Probe Microscope Provided With Same") was filed by Sumco on Mar 6, 2017. The application was issued on May 8, 2019.

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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