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Gas Barrier Film

Patent No. EP3892463 (titled "Gas Barrier Film") was filed by Toppan Printing on Dec 5, 2019. The application was issued on Nov 5, 2025.

Patent Summary

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Patent Oppositions

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.

CompanyOpposition DateRepresentative
MULLER BORE & PARTNER PATENTANWALTE PARTG MBBJul 30, 2026MULLER BORE & PARTNER PATENTANWALTE PARTG MBB

Dossier Documents

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EP3892463

TOPPAN PRINTING
Application Number
EP19893482A
Filing Date
Dec 5, 2019
Status
Granted And Under Opposition
Oct 3, 2025
Publication Date
Nov 5, 2025
External Links
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