Patent No. EP3681977 (titled "Coke Oven Device With Circumflowed Circular Current Path For Producing Coke And Method For Operating The Coke Oven Device And Control System And Use") was filed by Thyssenkrupp on Sep 13, 2018. The application was issued on Dec 27, 2023.

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 |
|---|---|---|
| PAUL WURTH | Sep 25, 2024 | OFFICE FREYLINGER |
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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