Patent No. EP3579817 (titled "Sensorily Attractive Hydrodispersion With The Uv Protection Filters 2-Ethylhexyl Salicylate And 4-Tert-Butyl-4'-Methoxy Dibenzoylmethane") was filed by Beiersdorf on Jan 5, 2018. The application was issued on Sep 27, 2023.

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 | Jun 17, 2024 | 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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