Patent No. EP3215166 (titled "Altering Gene Expression In Cart Cells And Uses Thereof") was filed by The Trustees OF The University OF Pennsylvania on Oct 15, 2015. The application was issued on Nov 27, 2024.

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 |
|---|---|---|
| STRAWMAN | Jan 24, 2025 | MEWBURN ELLIS |
| MAIWALD | Jan 23, 2025 | MAIWALD |
| MARGARET DIXON | Oct 22, 2024 | MEWBURN ELLIS |
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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