Patent No. EP3390178 (titled "Method For Controlling An Electropneumatic Parking Brake Device Of A Vehicle While Driving As An Auxiliary Brake") was filed by Knorr Bremse Systeme FR Nutzfahrzeuge on Dec 13, 2016. The application was issued on Oct 30, 2019.

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 |
|---|---|---|
| WABCO EUROPE BVBA | Jul 30, 2020 | EISENFHR SPEISER |
| ZF CV SYSTEMS EUROPE | Jul 30, 2020 | EISENFUHR SPEISER |
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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