Patent No. EP3741874 (titled "Method Of Production Of Tin Containing Non Grain-Oriented Silicon Steel Sheet") was filed by Arcelormittal on Oct 20, 2015. The application was issued on Oct 11, 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 |
|---|---|---|
| VOESTALPINE STAHL | Jul 11, 2024 | AERA |
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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