Patent No. EP2928635 (titled "Laser Machining Device And Method For Machining A Workpiece By Using A Laser Machining Device") was filed by Ewag on Dec 3, 2013. The application was issued on Feb 22, 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 |
|---|---|---|
| SAUER | Nov 22, 2017 | MERH MATIAS ERNY REICHL HOFFMANN PATENTANWALTE PARTG MBB |
| GFH | Nov 20, 2017 | WOLF |
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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