Patent No. EP4155409 (titled "Method Of Increasing The Replication Of A Circular Dna Molecule") was filed by Curevac Manufacturing on Aug 4, 2016. The application was issued on Dec 27, 2023.

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 |
|---|---|---|
| SANOFI | Sep 27, 2024 | CARPMAELS & RANSFORD |
| WEICKMANN & WEICKMANN | Sep 27, 2024 | - |
| BIONTECH | Sep 25, 2024 | HOPFNER |
| MARGARET DIXON | Sep 25, 2024 | MEWBURN ELLIS |
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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