Patent No. EP2676802 (titled "Security Element With Diffractive Structure") was filed by OVD Kinegram on Jun 20, 2013. The application was issued on Sep 16, 2015.

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 |
|---|---|---|
| CCL SECURE | Jul 7, 2017 | KATERLE |
| SURYS | Jun 15, 2016 | OSHA LIANG |
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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