Patent No. EP3164313 (titled "Articulated Train-Type Rail Vehicle") was filed by Siemens on Aug 28, 2015. The application was issued on Oct 15, 2025.

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 |
|---|---|---|
| CONSTRUCCIONES Y AUXILIAR DE FERROCARRILES | Oct 14, 2020 | GALBAIAN SCOOP |
| CONSTRUCCIONES Y AUXILIAR DE FERROCARRILES | Oct 14, 2020 | IGARTUA |
| ALSTOM | Sep 30, 2020 | LAVOIX |
| STADLER RAIL | Sep 29, 2020 | HEPP WENGER RYFFEL |
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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