Patent No. EP3840414 (titled "Hearing Device With Certificates And Related Methods") was filed by GN Hearing on Dec 19, 2019. The application was issued on Aug 23, 2023.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| OTICON | May 23, 2024 | COHAUSZ & FLORACK |
| WIDEX | May 22, 2024 | FDST PATENTANWALTE |
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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