Patent No. EP3995872 (titled "Two-Stage Expanded Beam Optical Coupling") was filed by Imec VZW on Nov 9, 2021. The application was issued on May 11, 2022.

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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