Patent No. EP3024461 (titled "A Combination Of Oxycodone And Naloxone For Use In Treating Pain In Patients Suffering From Pain And A Disease Resulting In Intestinal Dysbiosis And/Or Increasing The Risk For Intestinal Bacterial Translocation") was filed by Euro Celtique on Jul 23, 2014. The application was issued on May 13, 2020.

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.
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.