Patent No. EP2623466 (titled "Process For The Preparation Of An Aqueous Solution Comprising At Least One Earth Alkali Hydrogen Carbonate And Its Use") was filed by Omya on Feb 3, 2012. The application was issued on May 13, 2020.

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 |
|---|---|---|
| LHOIST RECHERCHE ET DEVELOPPEMENT | Dec 21, 2017 | GEVERS & ORES |
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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