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Patent No. EP2756004 (titled "Methods For Reducing Lipoprotein(A) Levels By Administering An Inhibitor Of Proprotein Convertase Subtilisin Kexin-9 (Pcsk9)") was filed by Regeneron Pharmaceuticals on Sep 12, 2012. The application was issued on Dec 25, 2019.

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 |
|---|---|---|
| BOEHMERT & BOEHMERT ANWALTSPARTNERSCHAFT MBB | Sep 25, 2020 | ENGELHARD |
| AMGEN | Dec 27, 2019 | DORRIES |
| AMGEN | Dec 27, 2019 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN |
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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