Patent No. EP3400943 (titled "Compounds For Use In The Treatment Of Erbb2+ Brain Cancer") was filed by Array Biopharma on Mar 25, 2013. The application was issued on Dec 2, 2020.

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 |
|---|---|---|
| SANDOZ | Sep 1, 2021 | TER MEER STEINMEISTER & PARTNER |
| TEVA PHARMACEUTICALS | Sep 1, 2021 | KRAUS & LEDERER PARTGMBB |
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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