Patent No. EP3795696 (titled "Identification And Use Of Circulating Nucleic Acid Tumor Markers") was filed by The Board OF Trustees OF The Leland Stanford Junior University on Mar 12, 2014. The application was issued on Apr 26, 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 |
|---|---|---|
| JAMES POOLE | Jan 26, 2024 | CARPMAELS & RANSFORD |
| MURGITROYD | Jan 26, 2024 | MURGITROYD |
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