Patent No. EP2828218 (titled "Methods Of Lowering The Error Rate Of Massively Parallel Dna Sequencing Using Duplex Consensus Sequencing") was filed by University OF Washington Through ITS Center FOR Commercialization on Mar 15, 2013. The application was issued on Apr 7, 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 |
|---|---|---|
| LEWIS SILKIN | May 5, 2021 | GAUNT |
| MARGARET DIXON | May 5, 2021 | MEWBURN ELLIS |
| WITHERS & ROGERS | May 4, 2021 | TOMBLING |
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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