Patent No. EP2956129 (titled "Pharmaceutical Compositions Containing Dexketoprofen And Tramadol") was filed by Laboratorios Menarini on Feb 6, 2014. The application was issued on Apr 18, 2018.

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 |
|---|---|---|
| HOFFMANN EITLE | Jan 18, 2019 | - |
| INTAS PHARMACEUTICALS | Jan 18, 2019 | ACCORD HEALTHCARE |
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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