Patent No. EP3245309 (titled "Highly Formable Automotive Aluminum Sheet With Reduced Or No Surface Roping And A Method Of Preparation") was filed by Novelis on Jan 12, 2016. The application was issued on Jun 12, 2019.

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 |
|---|---|---|
| ARCONIC | Mar 12, 2020 | FORRESTERS |
| ALERIS ALUMINUM DUFFEL BVBA | Dec 20, 2019 | MULLER SCHUPFNER & PARTNER PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB MUC |
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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