Packaging Made Of Cellulose Material And Opening Method

Patent No. EP4048606 (titled "Packaging Made Of Cellulose Material And Opening Method") was filed by Karl Knauer on Oct 22, 2020. The application was issued on Sep 10, 2025.

Patent Summary

Packaging for piece goods comprises a folded shell (16) of cellulose-containing flat material and a cover (18) enclosing an interior (24). The shell has a first side wall (30) with a first sealing rim (36) angled outwardly along a first fold edge (38), and a second side wall (32) with a second sealing rim (40) angled outwardly along a second fold edge (42). The cover is glued to both sealing rims. A perforation (44) on the first fold edge enables joint tearing of the first sealing rim and its attached cover portion from the first side wall. The bonding strength of the cover to the second sealing rim exceeds the material strength of the cover and/or shell, allowing the cover to be pulled off the second sealing rim after the first rim is torn.

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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
COLGATE PALMOLIVEJun 10, 2026SCHICKER
KOCH PAC SYSTEMEJun 8, 2026WACHTER
KARTONVEREDELUNG KNAPPMay 20, 2026ULLRICH & NAUMANN PARTG MBB

Dossier Documents

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EP4048606

KARL KNAUER
Application Number
EP20797430A
Filing Date
Oct 22, 2020
Status
Granted And Under Opposition
Aug 8, 2025
Publication Date
Sep 10, 2025