Patent No. EP3224339 (titled "Wash Oil For Use As An Antifouling Agent In Gas Compressors") was filed by Borealis on Nov 23, 2015. The application was issued on Jan 2, 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 |
|---|---|---|
| BL | Oct 1, 2019 | ATOUT PI LAPLACE |
| ECOLAB USA | Oct 1, 2019 | HGF |
| EVONIK OPERATIONS | Sep 18, 2019 | EVONIK PATENT 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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