Patent No. EP3177672 (titled "Energy-Efficient And Environmentally Friendly Process For The Production Of Target Chemical Compounds From Cellulosic Material") was filed by Clariant on Jul 30, 2015. The application was issued on Dec 9, 2020.

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 |
|---|---|---|
| ARBAFLAME TECHNOLOGY | Sep 9, 2021 | WEICKMANN & WEICKMANN |
| ARBAFLAME TECHNOLOGY | Sep 9, 2021 | WEICKMANN & WEICKMANN PARTMBB |
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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