Patent No. EP3280803 (titled "Chemically Modified Guide Rnas For Crispr/Cas-Mediated Gene Regulation") was filed by Agilent on Apr 5, 2016. The application was issued on May 26, 2021.

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 |
|---|---|---|
| MAIWALD | Feb 28, 2022 | MAIWALD |
| JAMES POOLE | Aug 9, 2021 | CARPMAELS & RANSFORD |
| WUESTHOFF & WUESTHOFF PATENTANWALTE PARTG MBB | Jul 28, 2021 | WICHMANN |
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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