Patent No. EP1593309 (titled "Ddairy Product With At Least One Characteristic Of A Dairy Product Mixture") was filed by Friesland Brands on May 7, 2004. The application was issued on Jun 25, 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 |
|---|---|---|
| NESTEC | Mar 25, 2015 | OBRIEN |
| DUPONT NUTRITION BIOSCIENCES | Mar 24, 2015 | D YOUNG |
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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