Patent No. EP2999752 (titled "Metallic Lustre Pigments Based On Substrate Flakes With A Thickness Of 1-50 Nm") was filed by Schlenk Metallic Pigments on Jul 29, 2014. The application was issued on Jul 31, 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 |
|---|---|---|
| ECKART | Dec 29, 2017 | WALCHER |
| SUN CHEMICAL COLORS & EFFECTS | Dec 22, 2017 | ALTMANN STOSSEL DICK |
| SUN CHEMICAL COLORS & EFFECTS | Dec 22, 2017 | ALTMANN STOSSEL DICK PATENTANWALTE PARTG MBB |
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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