Patent No. EP3982377 (titled "Method For Re-Establishing An Electrical Apparatus Of Medium Or High Voltage") was filed by Hitachi Energy on Oct 9, 2020. The application was issued on Nov 29, 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 |
|---|---|---|
| RTE RESEAU DE TRANSPORT DELECTRICITE SUPERGRID INSTITUTE | Aug 28, 2024 | BONNET |
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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