Patent No. EP2356981 (titled "Mascara Containing Aqueous Dispersion Of Polyurethane And A Hard Wax") was filed by L'Oreal on Dec 17, 2010. The application was issued on Mar 20, 2019.

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 |
|---|---|---|
| FA SCHWANHAUSSER INDUSTRIE HOLDING | Dec 20, 2019 | LEISSLER GERSTL |
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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