Patent No. EP2988830 (titled "Composition For Straightening Keratin Fibres, Comprising A Urea And/Or A Urea Derivative And A Nonionic, Cationic, Amphoteric Or Anionic Associative Polymeric Thickener, Process And Use Thereof") was filed by L'Oreal on Apr 25, 2014. The application was issued on Mar 17, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| BEIERSDORF | Dec 15, 2021 | BEIERSDORF |
| BEIERSDORF | Dec 15, 2021 | UEXKULL & STOLBERG |
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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