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Heat-Sealable Barrier Paper

Patent No. EP3821074 (titled "Heat-Sealable Barrier Paper") was filed by Mitsubishi Hitec Paper Europe on Jul 10, 2019. The application was issued on Jan 11, 2023.

Patent Summary

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Patent Oppositions (2)

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
BILLERUD AKTIEBOLAG PUBLOct 11, 2023KRANSELL & WENNBORG KB
KOEHLER INNOVATION & TECHNOLOGYOct 5, 2023PATENTSHIP PATENTANWALTSGESELLSCHAFT

Dossier Documents

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EP3821074

MITSUBISHI HITEC PAPER EUROPE
Application Number
EP19739964A
Filing Date
Jul 10, 2019
Status
Revoked
Apr 25, 2025
Publication Date
Jan 11, 2023
External Links
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