Patent No. EP3788256 (titled "A Rotor For A Wind Turbine With A Pitch Bearing Unit") was filed by Vestas Wind Systems on Apr 26, 2019. The application was issued on Dec 7, 2022.

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 |
|---|---|---|
| GE WIND ENERGY | Sep 7, 2023 | DE ROOIJ |
| LIEBHERR COMPONENTS BIBERACH | Sep 7, 2023 | THOMA |
| THYSSENKRUPP ROTHE ERDE GERMANY | Sep 5, 2023 | THYSSENKRUPP |
| SUZLON ENERGY GERMAN BRANCH | Aug 31, 2023 | - |
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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