Patent No. EP3344063 (titled "Methods Of Increasing Fat Soluble Vitamin Uptake In Feed") was filed by Dupont Nutrition Biosciences APS on Aug 30, 2016. The application was issued on Nov 2, 2022.

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 |
|---|---|---|
| DSM NUTRITIONAL PRODUCTS | Jul 26, 2023 | SCHIWECK WEINZIERL KOCH PATENTANWALTE PARTNERSCHAFT MBB |
| NOVOZYMES | Jul 25, 2023 | POTTER CLARKSON |
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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