Patent No. EP3580066 (titled "Data Carrier With A Window Security Element") was filed by Giesecke & Devrient on Feb 8, 2018. The application was issued on Nov 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 |
|---|---|---|
| HUECK FOLIEN GESELLSCHAFT | Dec 14, 2022 | BURGER |
| DE LA RUE | Dec 12, 2022 | BOULT WADE TENNANT |
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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