Patent No. EP3437711 (titled "Mobile Dust Extraction Device") was filed by Fanca on May 10, 2018. The application was issued on Apr 19, 2023.

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 |
|---|---|---|
| CFT COMPACT FILTER TECHNIC | Jan 19, 2024 | DOMPATENT VON PATENT UND RECHTSANWALTEN |
| CFT COMPACT FILTER TECHNIC | Jan 19, 2024 | SCHULTE & SCHULTE |
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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