Patent No. EP3126539 (titled "Equipment And Process For The Pickling And Metallic Coating Of A Metal Strip") was filed by Clecim on Jan 26, 2015. The application was issued on Nov 25, 2020.

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 |
|---|---|---|
| SMS GROUP | Aug 25, 2021 | HEMMERICH & KOLLEGEN |
| ARCELORMITTAL | Aug 24, 2021 | LAVOIX |
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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