Patent No. EP2773797 (titled "Crucible And Method For The Production Of A (Near) Monocrystalline Semiconductor Ingot") was filed by Vesuvius France on Nov 2, 2012. The application was issued on Aug 5, 2015.

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 |
|---|---|---|
| HERAEUS QUARZGLAS GMBH & CO. KG | May 4, 2016 | STAUDT |
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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