Patent No. EP1962781 (titled "Transparent Sunscreen Agents") was filed by Beiersdorf on Dec 12, 2006. The application was issued on May 14, 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 |
|---|---|---|
| L'OREAL | Feb 13, 2015 | LOREAL |
| PLOUGMANN VINGTOFT | Feb 13, 2015 | - |
| STADA ARZNEIMITTEL | Feb 12, 2015 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| KREIS | Feb 3, 2015 | HERZOG PATENTANWALTS |
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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