Patent No. EP2476520 (titled "Electric Machine Tool, In Particular A Grinding Or Polishing Machine") was filed by Metabowerke on Nov 15, 2011. The application was issued on Apr 6, 2016.

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.
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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