Patent No. EP3031921 (titled "Delivery, Engineering And Optimization Of Systems, Methods And Compositions For Sequence Manipulation And Therapeutic Applications") was filed by Massachusetts Institute OF Technology on Dec 12, 2013. The application was issued on Mar 12, 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 |
|---|---|---|
| GRUND IPG PATENTANWALTE UND SOLICITOR PARTG MBB | Dec 12, 2025 | GRUND |
| VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | Mar 12, 2025 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
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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