Patent No. EP2042227 (titled "Emission Treatment System And Method Using A Scr Filter") was filed by Basf on Jul 30, 2004. The application was issued on Jul 29, 2015.

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 |
|---|---|---|
| UMICORE | Mar 4, 2016 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
| JOHNSON MATTHEY PUBLIC | Jul 29, 2015 | BOULT WADE TENNANT |
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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