Patent No. EP3562911 (titled "Fire Retarding Composition For Use In Wood Composite Panels") was filed by Ecochem on Jan 2, 2018. The application was issued on Sep 17, 2025.
A fire retardant composition for wood composite panels that maintains compatibility with the resin used in production. The composition comprises a fire retardant agent, a pH regulating compound, and optionally a smoke suppressing agent, with a pH range of 3.5-8.5 in a 10% aqueous solution. The pH is specifically chosen based on the type of resin used, allowing for optimal performance without compromising the resin's functionality.

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 |
|---|---|---|
| BURNBLOCK HOLDING APS | Mar 8, 2023 | PATRADE |
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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