Patent No. EP2888382 (titled "Intergranular Corrosion-Resistant Aluminum Alloy Strip, And Method For The Production Thereof") was filed by Hydro Aluminium Rolled Products on Aug 22, 2013. The application was issued on Feb 26, 2025.

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 | Aug 22, 2017 | FORRESTERS |
| ALERIS ALUMINIUM DUFFEL BVBAALERIS ROLLED PRODUCTS | Aug 21, 2017 | SCHINKEL |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM NEUF BRISACH | Aug 9, 2017 | 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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