Patent No. EP2667147 (titled "Interchangeable Optics Configuration For A Chromatic Range Sensor Optical Pen") was filed by Mitutoyo on May 27, 2013. The application was issued on Jul 4, 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 |
|---|---|---|
| PRECITEC OPTRONIK | Apr 3, 2019 | SCHWEIGER |
| WERTH MESSTECHNIK | Apr 2, 2019 | STOFFREGEN |
| HEXAGON METROLOGY | Mar 22, 2019 | KNEFEL |
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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