Patent No. EP1974688 (titled "Method For Manufacturing Teeth Replacements, Method For Producing A Data Record And Computer Readable Medium") was filed by Institut Straumann on Mar 28, 2008. The application was issued on Jan 13, 2016.

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 |
|---|---|---|
| BEGO BREMER GOLDSCHLÄGEREI WILH.-HERBST GMBH & CO KG | Oct 13, 2016 | EISENFUHR SPEISER |
| DENTSPLY IH AB | Oct 13, 2016 | AWA SWEDEN AB |
| RENISHAW | Oct 13, 2016 | BREWER |
| DRESCHER | Oct 10, 2016 | - |
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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