Patent No. EP2345425 (titled "Immunoglobulin G (Igg) Concentrate Depleted Of Anti-A And Anti-B Antibodies And Of Polyreactive Iggs") was filed by Laboratoire Franais DU Fractionnement ET DES Biotechnologies on Dec 26, 2006. The application was issued on Jul 11, 2018.

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 |
|---|---|---|
| OCTAPHARMA | Apr 11, 2019 | ULLRICH & NAUMANN PARTG MBB |
| TAKEDA PHARMACEUTICALS | Apr 11, 2019 | HOFFMANN EITLE |
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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