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Patent No. EP3344227 (titled "Composition Comprising At Least One Anionic Surfactant, At Least Two Particular Nonionic Surfactants, At Least One Amphoteric Surfactant And At Least One Particular Cationic Polymer") was filed by L'Oreal on Sep 1, 2016. The application was issued on Jul 23, 2025.

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 |
|---|---|---|
| DALLI WERKE | Apr 19, 2021 | F & E PATENT |
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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