Patent No. EP4368705 (titled "Method For Generating T-Cells Compatible For Allogenic Transplantation") was filed by Cellectis on Mar 11, 2015. The application was issued on Jan 1, 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 |
|---|---|---|
| CARPMAELS & RANSFORD SPECIALITIES | Oct 1, 2025 | CARPMAELS & RANSFORD |
| MARGARET DIXON | Sep 30, 2025 | MEWBURN ELLIS |
| CENTURY THERAPEUTICS | Sep 29, 2025 | CARPMAELS & RANSFORD |
| MURGITROYD | Sep 29, 2025 | MURGITROYD |
| CENTURY THERAPEUTICS | Jan 2, 2025 | CARPMAELS & RANSFORD |
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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