Patent No. EP2590916 (titled "Stable 2,3,3,3-Tetrafluoropropene Composition") was filed by Arkema France on Jun 20, 2011. The application was issued on Oct 12, 2016.

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 |
|---|---|---|
| DAIKIN INDUSTRIES | Jul 12, 2017 | HOFFMANN EITLE |
| THE CHEMOURS FC | Jul 12, 2017 | HEINEMANN |
| MEXICHEM FLUOR DE CV | Jul 11, 2017 | POTTER CLARKSON |
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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