Patent No. EP2303968 (titled "Pigment Mixture Of Pvd Aluminium Effect Pigments And Thin Aluminium Effect Pigments From Milling, Process For Preparation Thereof And Use Thereof") was filed by Eckart on Jun 25, 2009. The application was issued on Sep 24, 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 |
|---|---|---|
| SCHLENK METALLIC PIGMENTS | Jun 23, 2015 | HEINEMANN |
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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