Patent No. EP3883856 (titled "3D-Printed Sealing Mask Or Sealing Frame") was filed by GEA Food Solutions Germany on Nov 15, 2019. The application was issued on Mar 6, 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 |
|---|---|---|
| MULTIVAC SEPP HAGGENMULLER | Dec 6, 2024 | GRUNECKER PATENT |
| WEBER FOOD TECHNOLOGY | Nov 29, 2024 | MANITZ FINSTERWALD PATENT UND RECHTSANWALTSPARTNERSCHAFT 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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