Patent No. EP3639548 (titled "Method And Device For Channel Sounding") was filed by Interdigital CE on Jun 16, 2017. The application was issued on Sep 3, 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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