Patent No. EP2085422 (titled "Compositions Containing Fluorine Substituted Olefins") was filed by Honeywell on Apr 29, 2005. The application was issued on Aug 30, 2017.

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 |
|---|---|---|
| MEXICHEM UK | Nov 5, 2020 | POTTER CLARKSON |
| ARKEMA FRANCE | Apr 9, 2018 | ARKEMA |
| ARKEMA FRANCE | Apr 9, 2018 | ARKEMA PATENT |
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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