Patent No. EP2611767 (titled "Elimination Of Organohalo And Oxirane Species In Carboxylic Acid Ester Streams") was filed by Stepan Specialty Products on Sep 2, 2011. The application was issued on Oct 25, 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 |
|---|---|---|
| AAK | Jul 25, 2018 | HAMER |
| KRAUS & LEDERER PARTGMBB | Jul 25, 2018 | KRAUS & LEDERER PARTGMBB |
| BUNGE LODERS CROKLAAN | Jul 24, 2018 | POTTER CLARKSON |
| CARGILL | Jul 19, 2018 | RUPP |
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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