Patent No. EP3345680 (titled "Roll Crusher Of Cooler Device") was filed by Kawasaki Jukogyo Kabushiki Kaisha on Aug 23, 2016. The application was issued on May 24, 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 |
|---|---|---|
| IKN INGENIEURBURO KUHLERBAU NEUSTADT | Feb 25, 2021 | LOHR |
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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