Patent No. EP3177150 (titled "A Combination Of Vitamin D And Zinc And Its Use") was filed by Nestec on Aug 6, 2015. The application was issued on Dec 23, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| FRESENIUS KABI DEUTSCHLAND | Sep 23, 2021 | FRESENIUS KABI DEUTSCHLAND |
| NUTRICIA | Sep 23, 2021 | NEDERLANDSCH OCTROOIBUREAU |
| ABBOTT | Sep 20, 2021 | BOULT WADE TENNANT |
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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