Patent No. EP1507616 (titled "Drilling Tool Set, Drilling Tool And Indexable Drill Bit Therefore") was filed by Sandvik on May 28, 2003. The application was issued on May 3, 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 |
|---|---|---|
| MITSUBISHI MATERIALS | Feb 2, 2018 | HOFFMANN EITLE |
| CERATIZIT AUSTRIA GESELLSCHAFT | Feb 1, 2018 | CIESLA |
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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