FLAT-FILTER FILTER ELEMENT WITH AT LEAST TWO FILTER MEDIUM BODIES, FILTER SYSTEM AND USE OF A FLAT-FILTER FILTER ELEMENT
Patent Abstract / Summary
The invention relates to a flat-filter filter element (10) for filtering a fluid, in particular for filtering air, for a filter system (100), in particular for an air filter system of a fuel cell system, having an arrangement of at least two flat-filter medium bodies (12, 32) being arranged adjacent to each other in an axial direction (80), so that the fluid can flow through them one after the other in the axial direction (80). The flat-filter filter element (10) comprises an overmolded plastic frame (50) that is directly molded to an outer circumference (26, 46) of one of the filter medium bodies (32, 12), and the other one of the filter medium bodies (12, 32) is sealingly connected to the overmolded plastic frame (50) by means of a circumferential cast element (20).The invention further relates to a filter system (100) as well as to a use of a flat-filter filter element (10).
IPC Classifications
Priority Claims
No priority claims recorded
Designated Contracting States (39 EPC States)
Parties & Representation
Applicants
MANN+HUMMEL GmbH
Schwieberdinger Str. 126, 71636 Ludwigsburg
DEInventors (1)
SCHMID, Daniel
71636 Ludwigsburg
DERepresentatives / Agents
Mann + Hummel Intellectual Property
Mann + Hummel, International GmbH & Co. KG
DEPotter Clarkson
Chapel Quarter, Mount Street
GBKey Procedural Dates
Patent Oppositions
Official opposition proceedings filed against European Patent EP4474037 under EPC Article 99.
Donaldson Company, Inc.
1400 West 94th Street, US
Potter Clarkson
2026-09-01
Legal Status & Event History
Official European Patent Office legal and procedural status changes recorded for this file.
| Date | Code | Event Description | Auth |
|---|---|---|---|
| 2024-11-08 | PUAI | PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE | EP |
| 2024-11-08 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2024-12-11 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2025-05-16 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-06-18 | 17P | REQUEST FOR EXAMINATION FILED | EP |
| 2025-06-29 | GRAP | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT | EP |
| 2025-06-29 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-07-30 | INTG | INTENTION TO GRANT ANNOUNCED | EP |
| 2025-10-24 | GRAS | GRANT FEE PAID | EP |
| 2025-10-31 | GRAA | (EXPECTED) GRANT | EP |
| 2025-10-31 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-12-03 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2025-12-03 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-24 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-31 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-10 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-10 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-08 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-13 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-14 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-28 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-30 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-05-15 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-05-18 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-06-29 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-03 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-09 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-11 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-15 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-18 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-21 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-23 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-25 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-08-06 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-09-04 | PLBI | OPPOSITION FILED | EP |
| 2026-09-09 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-09-15 | PLAX | NOTICE OF OPPOSITION AND REQUEST TO FILE OBSERVATION + TIME LIMIT SENT | EP |
| 2026-09-16 | P01 | OPT-OUT OF THE COMPETENCE OF THE UNIFIED PATENT COURT (UPC) REGISTERED | EP |
| 2026-09-01 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-10-07 | 26 | OPPOSITION FILED | EP |
| 2026-10-09 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-10-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
Patent & Non-Patent Citations
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Cited Patent Documents
Worldwide Patent Family
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Complete European Patent Register Dossier (148 Total Documents)
The full inspection file for Application EP23177478 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.
Recorded Filings & Patent Specifications
Official publication specifications, opposition filings, proprietor replies, and procedural submissions.