Patent No. EP1911538 (titled "Edge Replacing Cutting Tip And Method For Producing The Same") was filed by Sumitomo Electric Hardmetal on Jul 24, 2006. The application was issued on Aug 30, 2017.

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 |
|---|---|---|
| ISCAR | May 23, 2018 | VOSSIUS & PARTNER |
| ISCAR | May 23, 2018 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
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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