Patent No. EP4096794 (titled "Sunscreen With Pigment Filter Separation") was filed by Beiersdorf on Jan 18, 2021. The application was issued on May 29, 2024.

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 |
|---|---|---|
| DSM ASSETS | Feb 28, 2025 | KRAUS & LEDERER |
| DSM ASSETS | Feb 28, 2025 | KRAUS & LEDERER PARTGMBB |
| LOREAL | Feb 27, 2025 | LOREAL |
| BASF | Feb 27, 2025 | BASF ASSOCIATION |
| L'OREAL | Feb 27, 2025 | LOREAL |
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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