Patent No. EP3481507 (titled "Cosmetic Composition Comprising A Particular Combination Of Surfactants, A Silicone, A Cationic Polymer, A Fatty Alcohol And A Clay") was filed by L'Oreal on Jul 4, 2017. The application was issued on Oct 27, 2021.

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.
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