Patent No. EP3047878 (titled "Assembly For Preventing The Spread Of Fire In A Building With At Least One Building Wall Made Of Wood Building Materials") was filed by Wildeboer on Jan 26, 2016. The application was issued on Nov 24, 2021.

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 |
|---|---|---|
| SCHAKO | Aug 24, 2022 | PATENTANWALTE UND RECHTSANWALT WEISS |
| SCHAKO | Aug 24, 2022 | UND RECHTSANWALT WEISS |
| TROX | Aug 23, 2022 | DR STARK & PARTNER PATENTANWALTE MBB |
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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