Patent No. EP3209309 (titled "Compositions Comprising Bacterial Strains") was filed by CJ Bioscience on Nov 23, 2016. The application was issued on Mar 14, 2018.

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 |
|---|---|---|
| HOFFMANN EITLE | Dec 14, 2018 | - |
| JANSSEN BIOTECH | Dec 14, 2018 | HOFFMANN EITLE |
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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