Patent No. EP3365440 (titled "Restoring Function To A Non-Functional Gene Product Via Guided Cas Systems And Methods Of Use") was filed by Pioneer HI Bred on Oct 17, 2016. The application was issued on Sep 14, 2022.

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 |
|---|---|---|
| EISENFUHR SPEISER | Jun 13, 2023 | EISENFUHR SPEISER |
| SOLDENWAGNER | Jun 13, 2023 | EISENFUHR SPEISER |
| SYNGENTA CROP PROTECTION | Jun 13, 2023 | HGF |
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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