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Patent No. EP2340828 (titled "Pharmaceutical Combinations Of An Angiotensin Receptor Antagonist And An Nep Inhibitor") was filed by Novartis on Nov 8, 2006. The application was issued on Jul 15, 2020.

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 |
|---|---|---|
| ALFRED E TIEFENBACHER | Apr 15, 2021 | HAMM & WITTKOPP |
| BETAPHARM ARZNEIMITTEL | Apr 15, 2021 | HAMM & WITTKOPP |
| KRKA | Apr 15, 2021 | HOFFMANN EITLE |
| POLPHARMA | Apr 15, 2021 | HAMM & WITTKOPP |
| D YOUNG | Apr 14, 2021 | D YOUNG |
| STADA ARZNEIMITTEL | Apr 14, 2021 | KERNEBECK |
| SANOVEL ILAC SANAYI VE TICARET ANONIM SIRKETI | Apr 7, 2021 | SONNENHAUSER |
| GENERICS UK | Jan 19, 2021 | 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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