Patent No. EP2658399 (titled "Nutritional Compositions Comprising Human Milk Oligosaccharides And Nucleotides And Uses Thereof For Treating And/Or Preventing Enteric Viral Infection") was filed by Abbott on Dec 22, 2011. The application was issued on Feb 28, 2024.

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 |
|---|---|---|
| NUTRICIA | Nov 27, 2019 | NEDERLANDSCH OCTROOIBUREAU |
| NESTLE | Nov 26, 2019 | KRISHNAN |
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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