Patent No. EP1557674 (titled "Analyzer And Analyzing Method Using Disposable Tips") was filed by Sysmex on Jan 13, 2005. The application was issued on Oct 1, 2014.

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 |
|---|---|---|
| VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | Jun 30, 2015 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
| F HOFFMANN LA ROCHE | Jun 29, 2015 | PETERREINS SCHLEY |
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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