Patent No. EP2686006 (titled "Composition Comprising Diamine Oxidase For The Prevention Of Hangover Symptoms") was filed by DR Healthcare Espaa on Mar 16, 2012. The application was issued on Feb 19, 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 |
|---|---|---|
| KERNEBECK PATENTANWALTS | Sep 14, 2017 | KERNEBECK |
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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