Patent No. EP3043768 (titled "Method For The Treatment Of Hair From A Composition Comprising An Organic Monoacid And A Cellulosic Polymer") was filed by Biato on Aug 13, 2013. The application was issued on Jun 29, 2022.

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 |
|---|---|---|
| KAO GERMANY | Jan 31, 2020 | GRIT |
| HENKEL | Jan 22, 2020 | LKGLOBAL LORENZ & KOPF |
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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