Flat-Filter Filter Element With At Least Two Filter Medium Bodies, Filter System And Use Of A Flat-Filter Filter Element

Patent No. EP4474037 (titled "Flat-Filter Filter Element With At Least Two Filter Medium Bodies, Filter System And Use Of A Flat-Filter Filter Element") was filed by Mannhummel on Jun 6, 2023. The application was issued on Dec 3, 2025.

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 DateRepresentative
DONALDSONSep 1, 2026POTTER CLARKSON

Dossier Documents

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

EP4474037

MANNHUMMEL
Application Number
EP23177478A
Filing Date
Jun 6, 2023
Status
Granted And Under Opposition
Oct 31, 2025
Publication Date
Dec 3, 2025