Patent No. EP2766438 (titled "Additive, Composition Comprising It And Use Thereof") was filed by Ineos Europe on Oct 12, 2012. The application was issued on Aug 28, 2019.

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 |
|---|---|---|
| AKZO NOBEL CHEMICALS INTERNATIONAL BV | Jan 17, 2017 | AKZO NOBEL CHEMICALS GROUP |
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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