Patent No. EP2913552 (titled "Back-Plate Composition, Back Plate, Brake Pad, And Caliper Device") was filed by Sumitomo Bakelite on Oct 24, 2013. The application was issued on Apr 18, 2018.

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 | Jan 15, 2019 | IPSILON BENELUX |
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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