Patent No. EP1931710 (titled "Engineered Anti-Il-23 Antibodies") was filed by Merck Sharp & Dohme on Aug 29, 2006. The application was issued on Jan 18, 2017.

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 |
|---|---|---|
| ABBVIE | Oct 18, 2017 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB DUSSELDORF |
| ABBVIE OVERSEAS RL | Oct 18, 2017 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB DUSSELDORF |
| ELI LILLY | Oct 10, 2017 | BIJVANK |
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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