Patent No. EP2592155 (titled "Egfr Mutations") was filed by Genentech on Jun 2, 2005. The application was issued on Sep 11, 2019.

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 | Sep 29, 2016 | CARPMAELS & RANSFORD |
| SAGITTARIUS INTELLECTUAL PROPERTY LLP | Sep 29, 2016 | TEUTEN |
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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