Patent No. EP3354747 (titled "Non-Invasive Determination Of Methylome Of Tumor From Plasma") was filed by The Chinese University OF Hong Kong on Sep 20, 2013. The application was issued on Feb 17, 2021.

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 | Nov 17, 2021 | CARPMAELS & RANSFORD |
| EUROPEAN OPPOSITIONS | Nov 16, 2021 | LEONARD |
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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