Patent No. EP3505751 (titled "Wind Turbine Blades") was filed by Vestas Wind Systems on Dec 11, 2012. The application was issued on Mar 24, 2021.

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 |
|---|---|---|
| SIEMENS GAMESA RENEWABLE ENERGY | Dec 23, 2021 | SGRE ASSOCIATION |
| SIEMENS GAMESA RENEWABLE ENERGY DEUTSCHLAND | Dec 23, 2021 | SGRE ASSOCIATION |
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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