Patent No. EP2867382 (titled "Outer Coating For An Underground Piping Member Made From Iron, Coated Piping Member And Method For Depositing The Coating") was filed by Saint Gobain on Jun 28, 2013. The application was issued on Jul 13, 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 |
|---|---|---|
| ELECTROSTEEL CASTINGS IN ELECTROSTEEL EUROPE FR | Apr 3, 2019 | MATKOWSKA |
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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