The weekly litigation news digest is live. Subscribe now
The patent EP4234240 was granted to Avient Protective Materials on Jan 29, 2025. The application was filed on Dec 17, 2018 under application number EP23174573A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
Composite sheet for ballistic protection comprising high tenacity polyethylene fibers and a functionalized polyethylene resin, wherein the fibers have a tenacity of at least 1.5 N/tex and the resin is a copolymer of ethylene with at least one unsaturated carboxylic acid comonomer, preferably acrylic acid or methacrylic acid, with at least 90 mol% of ethylene-derived monomeric units. The composite sheet exhibits improved bias extension shear properties, enabling the production of high-quality compression-molded ballistic articles with enhanced thermal stability and reduced manufacturing defects.

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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.
Date
Description
Get instant alerts for new documents