IP Verse

Absorbent Articles

Patent No. EP3711729 (titled "Absorbent Articles") was filed by Ontex on Mar 21, 2019. The application was issued on Dec 16, 2020.

Patent Summary

An absorbent core for hygiene products that combines a channeled core with a specially designed acquisition distribution layer to achieve exceptional dryness and rapid fluid acquisition. The core features one or more channels that extend along its length, with the channels' length ranging from 10% to 95% of the core's total length. The acquisition distribution layer is positioned between the top sheet and the core, and is designed to quickly collect and distribute fluid surges to the core's channels. The core's channels are continuous and interconnected, allowing for efficient fluid distribution throughout the core. The core's design enables a tri-stage fluid distribution system, with the channels providing the fastest fluid distribution, followed by the three-dimensional absorbent material, and finally the superabsorbent polymer.

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Patent Family

Patent Oppositions (3)

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
PAUL HARTMANNSep 15, 2021DREISS PATENTANWALTE PARTG MBB
ESSITY HYGIENE AND HEALTH AKTIEBOLAGSep 13, 2021ESSITY HYGIENE AND HEALTH
DRYLOCKJul 28, 2021ARNOLD & SIEDSMA

Dossier Documents

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EP3711729

ONTEX
Application Number
EP19164452A
Filing Date
Mar 21, 2019
Status
Revoked
May 14, 2025
Publication Date
Dec 16, 2020
External Links
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