Patent No. EP1828858 (titled "Control System With A Plurality Of Spatially Distributed Stations And Method For Transmitting Data In Said Control System") was filed by Pilz on Dec 21, 2005. The application was issued on Feb 13, 2019.

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 |
|---|---|---|
| PHOENIX CONTACT | Nov 12, 2019 | BLUMBACH ZINNGREBE PATENTANWALTE PARTG MBB |
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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