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Patent No. EP3303598 (titled "Targeted Lipid Particles For Systemic Delivery Of Nucleic Acid Molecules To Leukocytes") was filed by Ramot AT TEL Aviv University on May 25, 2016. The application was issued on Mar 19, 2025.

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 |
|---|---|---|
| KARO | Dec 18, 2025 | - |
| SANOFI | Dec 15, 2025 | CARPMAELS & RANSFORD |
| STRAWMAN | Dec 15, 2025 | 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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