Patent No. EP2951274 (titled "Cold Flow Improver With Broad Applicability In Mineral Diesel, Biodiesel And Blends Thereof") was filed by Evonik Degussa on Feb 3, 2014. The application was issued on Dec 11, 2024.

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 |
|---|---|---|
| CLARIANT PRODUKTE DEUTSCHLAND | Jan 24, 2017 | CLARIANT PRODUKTE DEUTSCHLAND |
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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