TechnologyPatent OppositionCompetitive Analysis

In the competitive field of Engine Exhaust Systems, companies are constantly innovating to stay ahead. Discover the latest patent opposition trends, top opposing and opposed companies, and the most recent patents getting opposed. Stay informed on the latest developments in Engine Exhaust Systems technology and learn how to protect your intellectual property.

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Explore the top companies that have filed the most patent oppositions in the technology industry.

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Patent challenges are becoming increasingly common in the Engine Exhaust Systems industry as companies work to protect their innovations in a highly competitive market. These legal battles can significantly impact the development and release of new technologies. Below is a list of the latest patents that have been opposed in the Engine Exhaust Systems industry, offering a snapshot of the ongoing struggles over intellectual property rights. For anyone involved in this industry, understanding these patent disputes is essential for navigating its future.

Last updated on: Jul 31, 2025
Patent NumberTitleApplicantOpposition DateOpposition Name

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Exhaust Gas Purification CatalystMITSUI MINING & SMELTINGDec 23, 2024JG OPPOSITIONS
A Catalytic Article And The Use Thereof For The Treatment Of An Exhaust GasJOHNSON MATTHEY PUBLICOct 24, 2024UMICORE
Improvements In Or Relating To Particulate FiltersJOHNSON MATTHEY PUBLICSep 6, 2024UMICORE
Catalytically Active Particle FilterUMICOREJul 3, 2024JOHNSON MATTHEY PUBLIC
Transition Metal-Carrying Zeolite And Production Method Therefor, And Nitrogen Oxide Purification Catalyst And Method For Using SameMITSUBISHI CHEMICALApr 25, 2024JOHNSON MATTHEY PUBLIC
Catalytic DeviceVITESCODec 11, 2023HOFFMANN EITLE
Zoned Catalyst For Diesel ApplicationsBASFOct 18, 2023UMICORE
Zoned Catalyst For Diesel ApplicationsBASFOct 16, 2023JOHNSON MATTHEY PUBLIC
Straddle-Type VehicleZHEJIANG CFMOTO POWERAug 4, 2023SEGWAY TECHNOLOGY
FilterJOHNSON MATTHEY JAPAN GKMay 24, 2023UMICORE

To stay ahead in the competitive Engine Exhaust Systems industry, companies are constantly innovating. Here are the top patents facing oppositions in the Engine Exhaust Systems industry. Stay informed on the latest opposition trends and learn how to protect your intellectual property.

Last updated on: Jul 31, 2025
Patent NumberGrant DateTitleApplicantTotal Oppositions
Dec 13, 2017Method For Treating Impurities Contained In Exhaust Gases Of Ships, Ship With Exhaust Gas Scrubber, And Purification UnitLANGH TECH3
Sep 19, 2018Evaporative Fuel Vapor Emission Control SystemsINGEVITY SOUTH CAROLINA2
Feb 21, 2018Use Of A Cu Alloy For Brazing Components Of Exhaust Gas Systems 84-88 % Copper; 8.5-13.5% Manganese; 1.5-4 % Cobalt Or Nickel; 0 - 0.5% SiliconUMICORE2
Apr 11, 2018Zoned Catalytic Filters For Treatment Of Exhaust GasJOHNSON MATTHEY PUBLIC2
Jan 18, 2023Zoned Catalyst For Diesel ApplicationsBASF2
May 15, 2019Engine Braking Device For A Combustion Engine And Method For Operating An Engine Braking DeviceMAN TRUCK & BUS2
Sep 4, 2024Zone Coated Catalyst To Simultaneously Reduce Nox And Unreacted AmmoniaENGELHARD2
Jul 4, 2018Integrated Scr And Amox Catalyst SystemsBASF CATALYSTS2
May 10, 2023Close-Coupled Scr SystemJOHNSON MATTHEY PUBLIC2
Oct 31, 2018MixerEBERSPCHER EXHAUST TECHNOLOGY2