Patent No. EP2838548 (titled "Hla Class Ii Deficient Cells, Hla Class I Deficient Cells Capable Of Expressing Hla Class Ii Proteins, And Uses Thereof") was filed by University OF Washington Through ITS Center FOR Commercialization on Mar 15, 2013. The application was issued on Jul 19, 2023.

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 |
|---|---|---|
| PAGE | Apr 16, 2024 | PAGE |
| JAMES POOLE | Aug 3, 2023 | 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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