Patent No. EP3310917 (titled "Novel Crispr Enzymes And Systems") was filed by Massachusetts Institute OF Technology on Jun 17, 2016. The application was issued on Sep 3, 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 |
|---|---|---|
| BOULT WADE TENNANT | Nov 12, 2020 | BOULT WADE TENNANT |
| JAMES POOLE | Nov 11, 2020 | CARPMAELS & RANSFORD |
| STRAWMAN | Nov 11, 2020 | POTTER CLARKSON |
| NEUEFEIND | Sep 25, 2020 | MAIWALD |
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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