Patent No. EP3093611 (titled "Measuring Method And Device To Measure The Straightness Error Of Bars And Pipes") was filed by Q Tech on May 13, 2016. The application was issued on Nov 3, 2021.

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 |
|---|---|---|
| MSG MASCHINENBAU | Aug 3, 2022 | HOFFMANN EITLE |
| MSG MASCHINENBAU | Aug 3, 2022 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB DUSSELDORF |
| RDE | Aug 2, 2022 | FAGGIONI |
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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