Patent No. EP2922393 (titled "Gene Editing In The Oocyte By Cas9 Nucleases") was filed by Helmholtz Zentrum Mnchen Deutsches Forschungszentrum FR Gesundheit UND Umwelt on Feb 27, 2014. The application was issued on Dec 28, 2022.

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 |
|---|---|---|
| TACONIC BIOSCIENCES | Jun 3, 2020 | 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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