Patent No. EP3110449 (titled "Medical Use Of A Dpp-4 Inhibitor") was filed by Boehringer Ingelheim on Feb 27, 2015. The application was issued on Jun 28, 2023.

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 | Mar 28, 2024 | ELKINGTON AND FIFE |
| POLPHARMA | Mar 26, 2024 | HAMM & WITTKOPP |
| WUESTHOFF & WUESTHOFF | Mar 26, 2024 | SONNENHAUSER |
| TEVA PHARMACEUTICALS | Mar 21, 2024 | VON KAUFFMANN |
| SANDOZ | Mar 13, 2024 | ELKINGTON AND FIFE |
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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