Patent No. EP4203982 (titled "Combination Of Collagen Peptide And Whey Protein For Use In A Condition Of The Skeletal Tissue") was filed by Rousselot on Aug 27, 2021. The application was issued on Feb 12, 2025.

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 |
|---|---|---|
| COMPAGNIE GERVAIS DANONE | Nov 12, 2025 | PLASSERAUD |
| FRESENIUS KABI DEUTSCHLAND | Nov 7, 2025 | FRESENIUS KABI DEUTSCHLAND |
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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