Patent No. EP2666959 (titled "Sealing Device Of Concrete Blocks And Manufacturing Method To Carry Out The Same") was filed by Fama on Mar 25, 2013. The application was issued on Jun 14, 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 |
|---|---|---|
| DATWYLER SEALING DEUTSCHLAND | Mar 2, 2018 | STUVEN |
| FIP INDUSTRIALE | Aug 10, 2017 | CINQUANTINI |
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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