Patent No. EP3341502 (titled "High-Strength 6Xxx Aluminum Alloys And Methods Of Making The Same") was filed by Novelis on Dec 16, 2016. The application was issued on Mar 17, 2021.

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 | Dec 17, 2021 | LENZING GERBER STUTE |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM MUSCLE SHOALS CONSTELLIUM BOWLING GREEN | Dec 14, 2021 | CONSTELLIUM PROPRIETE INDUSTRIELLE |
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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