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Oil/Grease Resistant Paper Products

Patent No. EP4244422 (titled "Oil/Grease Resistant Paper Products") was filed by Sappi North America on Aug 11, 2021. The application was issued on Dec 4, 2024.

Patent Summary

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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
KOEHLER INNOVATION & TECHNOLOGYSep 3, 2025MEISSNER BOLTE PARTNERSCHAFT MBB
UPM SPECIALTY PAPERSSep 3, 2025BERGGREN
BILLERUD AKTIEBOLAG PUBLAug 21, 2025KRANSELL & WENNBORG KB

Dossier Documents

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EP4244422

SAPPI NORTH AMERICA
Application Number
EP21763477A
Filing Date
Aug 11, 2021
Status
Granted And Under Opposition
Nov 1, 2024
Publication Date
Dec 4, 2024
External Links
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