Patent No. EP3150699 (titled "Culture Medium Containing Uridine And N-Acetyl-D-Mannosamine") was filed by JCR Pharmaceuticals on May 27, 2015. The application was issued on Aug 21, 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 |
|---|---|---|
| MAIWALD PATENT UND RECHTSANWALTSGESELLSCHAFT | Jun 25, 2020 | NEUEFEIND |
| MAIWALD | Jun 25, 2020 | MAIWALD |
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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