Patent No. EP3828433 (titled "Flat Spring Of A Hold-Down Assembly For The Brake Pads Of A Disc Brake") was filed by BPW Bergische Achsen on Apr 17, 2018. The application was issued on Aug 10, 2022.

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 |
|---|---|---|
| VRI VERBAND DER REIBBELAGINDUSTRIE EV | May 10, 2023 | IPSILON BENELUX |
| ZF FRIEDRICHSHAFEN | May 9, 2023 | WBH WACHENHAUSEN PATENTANWALTE PARTG 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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