Patent No. EP2332952 (titled "Modified 2' And 3'-Nucleoside Prodrugs For Treating Flaviridae Infections") was filed by Centre National DE LA Recherche Scientifique Cnrs on Jun 27, 2003. The application was issued on Apr 29, 2015.

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 |
|---|---|---|
| GENERICS UK | Jan 29, 2016 | FRKELLY |
| GILEAD SCIENCES | Jan 28, 2016 | NIEUWENHUYS |
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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