Patent No. EP3475142 (titled "Transmitter Device, Sensor Device, And Method For Sensing A Magnetic Field Change") was filed by Siemens Mobility on Jun 1, 2017. The application was issued on Dec 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 |
|---|---|---|
| ALSTOM ZWUS SP Z OO | Aug 31, 2021 | PATENTANWALTE BRESSEL UND PARTNER 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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