Patent No. EP2675689 (titled "Longitudinal Support For The Transition Region From A Coach Body Side Wall To The Coach Body Roof Of A Rail Vehicle Coach Body") was filed by Bombardier Transportation on Feb 14, 2011. The application was issued on Sep 2, 2020.

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 |
|---|---|---|
| STADLER RAIL | May 12, 2017 | HEPP WENGER RYFFEL |
| SIEMENS AG ÖSTERREICH | May 10, 2017 | MAIER |
| SIEMENS | May 2, 2017 | MAIER |
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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