Patent No. EP2591657 (titled "Moveable Device For Dispensing Fluid And/Or Solid Substances And Method For Controlling The Device") was filed by Horsch Leeb Application Systems on Nov 8, 2011. The application was issued on Jun 28, 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 |
|---|---|---|
| HERBERT DAMMANN | Mar 28, 2018 | - |
| TOPCON POSITIONING SYSTEMS | Mar 28, 2018 | KUHNEN & WACKER PATENT UND RECHTSANWALTSBURO PARTG MBB |
| HARDI | Mar 27, 2018 | LAVOIX |
| AMAZONEN WERKE H DREYER | Mar 26, 2018 | GRUNECKER PATENT |
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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