Patent No. EP2356184 (titled "Printing Ink And Coating Compositions Containing Derivatives Of Starch And Modified Starch") was filed by SUN Chemical on Nov 16, 2009. The application was issued on Jun 16, 2021.

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 |
|---|---|---|
| BASF | Oct 9, 2018 | BASF ASSOCIATION |
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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