Patent No. EP2130577 (titled "Air Treatment Device, In Particular Of A Pressurised Air Brake Assembly With A Separator For Fluid Liquids") was filed by Mannhummel on May 27, 2009. The application was issued on Dec 2, 2015.

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 |
|---|---|---|
| KNORR BREMSE SYSTEME FUR NUTZFAHRZEUGE | Aug 31, 2016 | AURIGIUM LEISCHNER & LUTHE |
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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