Patent No. EP3558560 (titled "Binder Based On Phenolic Resins Of The Benzyl Ether Type, Containing Free Phenol And Free Hydroxybenzyl Alcohols") was filed by ASK Chemicals on Dec 22, 2017. The application was issued on Nov 18, 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 |
|---|---|---|
| HUTTENES ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRANKTER HAFTUNG | Aug 18, 2021 | EISENFUHR SPEISER |
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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