Patent No. EP1758556 (titled "Oil-In-Water Emulsion For Delivery") was filed by Nestec on May 18, 2005. The application was issued on May 21, 2014.

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 |
|---|---|---|
| BEIERSDORF | Feb 23, 2015 | WILKE |
| FRESENIUS KABI DEUTSCHLAND | Feb 17, 2015 | 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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