Patent No. EP3323576 (titled "Method For The Preparation Of Fire-Retardant Insulating Panels/Mats And Fire-Retardant Injected Insulation Made From Fibres On The Basis Of Renewable Resources") was filed by Gutex Holzfaserplattenwerk H Henselmann on Nov 10, 2017. The application was issued on Jan 26, 2022.

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 |
|---|---|---|
| STEICO | Oct 26, 2022 | FRENKEL |
| TAHMOURESINIA | Oct 25, 2022 | - |
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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