Patent No. EP4108769 (titled "A Method For Producing And Purifying Rna, Comprising At Least One Step Of Tangential Flow Filtration") was filed by Curevac Manufacturing on May 30, 2016. The application was issued on Aug 30, 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 |
|---|---|---|
| CARPMAELS & RANSFORD SPECIALITIES | May 30, 2024 | CARPMAELS & RANSFORD |
| JAMES POOLE | May 30, 2024 | CARPMAELS & RANSFORD |
| HOPFNER | May 29, 2024 | - |
| PFIZER | Feb 29, 2024 | PFIZER |
| COHAUSZ & FLORACK PATENT UND RECHTSANWALTE PARTNERSCHAFTSGESELLSCHAFT MBB | Feb 27, 2024 | COHAUSZ & FLORACK |
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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