Patent No. EP2283819 (titled "Dpp Iv Inhibitor Formulations") was filed by Boehringer Ingelheim on Apr 30, 2007. The application was issued on Mar 11, 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 TRADING MYLAN | Jul 8, 2015 | JOHNSON |
| STADA ARZNEIMITTEL | Jul 8, 2015 | KERNEBECK |
| HEXAL | Jul 7, 2015 | PRUFER & PARTNER MBB PATENTANWALTE RECHTSANWALTE |
| TEVA PHARMACEUTICAL INDUSTRIES LTD | Jul 7, 2015 | KALHAMMER, GEORG |
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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