Patent No. EP3520641 (titled "Ballistic Protective Helmet") was filed by Ulbrichts on Jan 31, 2018. The application was issued on Mar 27, 2024.

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 |
|---|---|---|
| MEHLER VARIO SYSTEM | Jul 24, 2024 | MEYER DULHEUER MD LEGAL PATENTANWALTE PARTG 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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