Patent No. EP2940044 (titled "Methods Of Administering Anti-Tnfalpha Antibodies") was filed by Abbvie Biotechnology on Jun 5, 2002. The application was issued on Jan 18, 2017.

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 |
|---|---|---|
| ALVOTECH HF | Jul 15, 2021 | ARNOLD & SIEDSMA |
| STADA ARZNEIMITTEL | Aug 16, 2017 | MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH |
| PFIZER | Aug 11, 2017 | PFIZER |
| AMGEN | Aug 8, 2017 | DORRIES |
| GENERICS UK | Aug 8, 2017 | POHLMAN |
| KILGER, CHRISTIAN | Aug 3, 2017 | LEDERER & KELLER PATENTANWALTE PARTNERSCHAFT MBB |
| BIOGEN | Aug 2, 2017 | PATENT BOUTIQUE |
| SAMSUNG BIOEPIS UK LIMITED | Aug 2, 2017 | ENGELHARD |
| ARES TRADING | Aug 1, 2017 | D YOUNG |
| PAJARO | Aug 1, 2017 | ALT, MICHAEL HELMUT |
| HEXAL | Jun 30, 2017 | HENKEL |
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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