Patent No. EP2637690 (titled "Improved High Concentration Anti-Tnfalpha Antibody Liquid Formulations") was filed by Abbvie Biotechnology on Nov 11, 2011. The application was issued on Sep 21, 2016.

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 |
|---|---|---|
| ARNOLD & SIEDSMA | Jun 21, 2017 | PRINS |
| GENERICS UK TRADING MYLAN | Jun 21, 2017 | POHLMAN |
| HOFFMANN EITLE | Jun 21, 2017 | - |
| DEHMEL & BETTENHAUSEN | Jun 20, 2017 | RUCKERL |
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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