Patent No. EP2821154 (titled "Drum, System And Method For Handling Long Rolled Products Coming From Different Strands Of A Rolling Mill") was filed by Primetals Austria on Jul 5, 2013. The application was issued on May 25, 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 |
|---|---|---|
| DANIELI & C OFFICINE MECCANICHE | Jan 5, 2017 | TORTI |
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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