Patent No. EP3064349 (titled "Laminated Metal Sheet For Container, Method For Producing Metal Can, And Method For Evaluating Metal Sheet Moldability") was filed by JFE Steel on Oct 29, 2014. The application was issued on Apr 17, 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 |
|---|---|---|
| DUPONT TEIJIN FILMS PARTNERSHIP | Jan 17, 2020 | CARPMAELS & RANSFORD |
| NOVELIS | Jan 16, 2020 | WEICKMANN & WEICKMANN PARTMBB |
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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