Hummel competitive analysis

Explore patent oppositions filed by Hummel against competitors, revealing strategic technology disputes and market positioning.

Last updated on: Sep 10, 2026
Patent NumberTitleApplicantOpposition Date
Active Field Polarized Media Air Cleaning DeviceHENGSTMar 11, 2026
A Crankcase Ventilation SystemGRIMALDIJan 2, 2026
Cabin Air Filter With PolarisationHENGSTOct 29, 2025
Air Filter System For A Commercial VehicleDEEREOct 4, 2024
Filter Arrangement And MethodHENGSTSep 5, 2024
Filter With Sealing Compound And Filter Assembly With Such A FilterCARL FREUDENBERGMay 31, 2024
Air Filter CartridgeDONALDSONMay 28, 2024
System, Method And Computer Program Product For Air Filter ManagementCAMFILApr 19, 2024
Filter CartridgeDONALDSONJul 28, 2023
Air Cleaner Assemblies And CartridgeDONALDSONApr 27, 2023

Explore Hummel's recently opposed patents, revealing key competitive challenges and strategic patent disputes in the industry. Track oppositions filed by competitors to understand technology battlegrounds and assess potential risks.

Last updated on: Sep 10, 2026
Patent NumberPublication DateTitleTotal Oppositions
Jul 16, 2014Low-Grip Track For Vehicles1

Latest PTAB cases involving Hummel

Discover the latest PTAB cases involving Hummel, highlighting their recent legal challenges and patent disputes.

Peer Comparison New

IP litigation analysis comparing Hummel with top 3 competitors. Includes complete PTAB case data and opposition data from 2018 onwards.

Last updated on: Sep 10, 2026
CompanyOppositions FiledOppositions FacedPTAB Cases FiledPTAB Cases Faced
MANNHUMMEL321 - -
CARL FREUDENBERG3124 - -
DONALDSON2119 - 1
MAHLE15551 - -