Patent No. EP3642478 (titled "Output Unit Of A Pitch Drive And/Or Of A Yaw Drive Of A Wind Turbine, And Method") was filed by Wobben Properties on Jun 21, 2018. The application was issued on Jul 20, 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 |
|---|---|---|
| LIEBHERR COMPONENTS BIBERACH | Apr 20, 2023 | THOMA |
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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