Patent No. EP3759198 (titled "Process For Producing Fuels From A Blended Biorenewable Feed") was filed by UOP on Feb 26, 2019. The application was issued on May 21, 2025.

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 |
|---|---|---|
| VAROPREEM SVERIGE | Feb 20, 2026 | AWA SWEDEN |
| NESTE OYJ | Feb 18, 2026 | ZACCO DENMARK |
| TOPSOE | Feb 18, 2026 | D YOUNG |
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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