Patent No. EP3570884 (titled "Subcutaneous Her2 Antibody Formulations") was filed by F Hoffmann LA Roche on Jan 16, 2018. The application was issued on Sep 30, 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 |
|---|---|---|
| HOFFMANN EITLE | Jun 30, 2021 | HOFFMANN EITLE |
| POHLMAN | Jun 30, 2021 | POHLMAN |
| WITHERS & ROGERS | Jun 28, 2021 | TOMBLING |
| KONIG SZYNKA TILMANN VON RENESSE | Apr 22, 2021 | KONIG SZYNKA TILMANN VON RENESSE DUSSELDORF |
| KONIG SZYNKA TILMANN VON RENESSE | Apr 22, 2021 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB DUSSELDORF |
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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