Patent No. EP3911354 (titled "Aav-Mediated Gene Therapy Restoring The Otoferlin Gene") was filed by Centre National DE LA Recherche Scientifique Cnrs on Jan 20, 2020. The application was issued on Apr 3, 2024.

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 |
|---|---|---|
| MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | Apr 19, 2024 | - |
| POHLMAN | Apr 19, 2024 | POHLMAN |
| WEICKMANN & WEICKMANN | Apr 18, 2024 | - |
| REGENERON PHARMACEUTICALS | Apr 16, 2024 | CARPMAELS & RANSFORD |
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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