Patent No. EP1623080 (titled "Sandwich Plate-Like Construction") was filed by Serwin Holding on Mar 16, 2004. The application was issued on Oct 21, 2015.

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 |
|---|---|---|
| DE PUBLIEKRECHTELIJKE RECHTSPERSOON DE STAAT DER | Jul 21, 2016 | PETERS |
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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