Patent No. EP3040477 (titled "Method And Device For Determining A Surface Milled By At Least One Construction Machine Or Removal Machine With A Rotary Cutter") was filed by Wirtgen on Jun 4, 2012. The application was issued on Aug 8, 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.
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.