Patent No. EP3553229 (titled "Excavation Device And System For Monitoring A Construction Site") was filed by Bauer Spezialtiefbau on Apr 11, 2018. The application was issued on May 29, 2024.

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 |
|---|---|---|
| ABI ANLAGENTECHNIK BAUMASCHINEN INDUSTRIEBEDARF MASCHINENFABRIK UND VERTRIEBSGESELLSCHAFT | Feb 26, 2025 | DRNER & KTTER |
| ABI ANLAGENTECHNIK BAUMASCHINEN INDUSTRIEBEDARF MASCHINENFABRIK UND VERTRIEBSGESELLSCHAFT | Feb 26, 2025 | PATENTANWALTE DORNER & KOTTER 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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