Patent No. EP2402396 (titled "Oxygen Scavenging Plastic Material") was filed by Clariant Masterbatches Italia on Jun 30, 2010. The application was issued on Feb 25, 2015.

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 |
|---|---|---|
| M&G USA | Nov 25, 2015 | HOFFMANN EITLE |
| COLORMATRIX EUROPE | Nov 25, 2015 | APPLEYARD LEES |
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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