Patent No. EP2072035 (titled "Process For Lightening Human Keratin Fibres Using An Anhydrous Composition And A Particular Organic Amine, And Device Suitable Therefor") was filed by L'Oreal on Dec 19, 2008. The application was issued on Sep 17, 2014.

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 | Jun 17, 2015 | GRIT |
| HENKEL | Jun 16, 2015 | - |
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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