Patent No. EP2830473 (titled "Hard-Surface Suction Implement") was filed by Alfred Krcher on Mar 30, 2012. The application was issued on May 18, 2016.

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 |
|---|---|---|
| LEIFHEIT | Feb 20, 2017 | BTB BUNGARTZ BALTZER PARTNERSCHAFT MBB PATENTANWALTE |
| CARL FREUDENBERG | Feb 17, 2017 | REISER & PARTNER PATENTANWALTE 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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