Patent No. EP3176275 (titled "Aluminium-Silicon Die Casting Alloy Method For Producing A Die Casting Component Made Of The Alloy, And A Body Component With A Die Casting Component") was filed by Audi on Nov 18, 2016. The application was issued on Dec 13, 2023.

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 |
|---|---|---|
| STRAWMAN | Jul 9, 2019 | PATENTANWALTE UND RECHTSANWALT WEISS |
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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