Patent No. EP2998127 (titled "Multilayer Security Document, Method For Producing The Multilayer Security Document And Device For Manufacturing The Multilayer Security Document") was filed by Mhlbauer on Sep 19, 2014. The application was issued on Nov 23, 2016.

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 |
|---|---|---|
| POLSKA WYTWORNIA PAPIEROW WARTOSCIOWYCH | Aug 23, 2017 | MARCINSKA PORZUC |
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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