Patent No. EP2307162 (titled "Method And Tool For Producing A Surface Having A Predetermined Roughness") was filed by Blitz on Jul 27, 2009. The application was issued on Aug 30, 2017.

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 |
|---|---|---|
| KS HUAYU ALUTECH | May 30, 2018 | TERPATENT PARTGMBB |
| WALTER | May 30, 2018 | WSL PATENTANWALTE PARTNERSCHAFT 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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