Patent No. EP4005507 (titled "Implant And Guide For Maxillofacial Surgery") was filed by Materialise on Dec 12, 2013. The application was issued on May 14, 2025.

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 |
|---|---|---|
| LORENZ SEIDLER GOSSEL | Feb 16, 2026 | LORENZ SEIDLER GOSSEL |
| LORENZ SEIDLER GOSSEL RECHTSANWALTE PATENTANWALTE PARTNERSCHAFT MBB | Feb 16, 2026 | LORENZ SEIDLER GOSSEL |
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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