Patent No. EP2592258 (titled "Exhaust Gas Recirculation Valve") was filed by Cooper Standard Automotive Deutschland on Nov 8, 2011. The application was issued on Dec 6, 2017.

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 |
|---|---|---|
| PIERBURG GMBH | Mar 18, 2015 | TER SMITTEN |
| DEUTZ AG | Mar 17, 2015 | - |
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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