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IP Verse

Compostable Cellulose-Based Paper For Gas Barrier In Packaging Material - EP3819426

The patent EP3819426 was granted to Ahlstrom Munksj OYJ on Mar 29, 2023. The application was filed on Nov 7, 2019 under application number EP19207684A. The patent is currently recorded with a legal status of "Revoked".

EP3819426

AHLSTROM MUNKSJ OYJ
Application Number
EP19207684A
Filing Date
Nov 7, 2019
Status
Revoked
Aug 1, 2025
Publication Date
Mar 29, 2023
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

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 DateRepresentativeOpposition Status
UPM KYMMENE OYJDec 29, 2023COHAUSZ & FLORACKADMISSIBLE

Patent Citations (8) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONEP2841263
DESCRIPTIONWO2008084139
DESCRIPTIONWO2017187024
DESCRIPTIONWO2018197676
OPPOSITIONUS2056294
OPPOSITIONWO2017187024
SEARCHUS5362776
SEARCHWO2016186645

Dossier Documents

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