Patent Oppositions in patent classification index system industry

Explore the competitive field of patent classification index system where companies are constantly innovating to stay ahead. Discover the latest patent opposition trends, top companies filing and facing patent oppositions, and the most recent patents under dispute. Stay informed on patent activity in patent classification index system technology and learn how to protect your intellectual property.

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

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

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

Patent challenges are becoming increasingly common in the patent classification index system 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 patent classification index system 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: Feb 19, 2026
Patent NumberTitleApplicantOpposition DateOpposition Name
Lubricating Oil CompositionsINFINEUMJan 14, 2026AFTON CHEMICAL
Ethylene/Alpha-Olefin Copolymer And Lubricating OilMITSUI CHEMICALSDec 19, 2025BOREALIS
Ester Based Functional FluidOLEONNov 11, 2025SASOL CHEMIE
Gear Lubricant CompositionTOTAL MARKETING SERVICESOct 8, 2025FUCHS
Lubricating Oil CompositionsINFINEUMOct 7, 2025AFTON CHEMICAL
Use Of Lubricant Compositions For Direct Injection EnginesTHE LUBRIZOLSep 11, 2025INFINEUM
Diesel Engine Lubricating Compositions And Methods Of Use ThereofTHE LUBRIZOLAug 5, 2025INFINEUM
Ball Screw Grease Composition For Rack-Assisted Electric Power SteeringKYODO YUSHIAug 1, 2025DAVEPON
Ester Based Functional FluidOLEONJul 9, 2025PONTI & PARTNERS
Functional Fluids Comprising Low-Viscosity Polyalpha-Olefin Base StockEXXONMOBIL CHEMICAL PATENTSApr 24, 2025CHEVRON PHILLIPS CHEMICAL LP

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

Last updated on: Feb 19, 2026
Patent NumberPublication DateTitleApplicantTotal Oppositions
Aug 12, 2020Lubricating Oil CompositionsINFINEUM2
Aug 22, 2018Refrigerating ApparatusDAIKIN INDUSTRIES2
Feb 12, 2025Ester Based Functional FluidOLEON2
Jan 15, 2025Use Of Lubricant Compositions For Direct Injection EnginesTHE LUBRIZOL2
Sep 20, 2017Pipe Screw JointSUMITOMO METAL INDUSTRIES1
Apr 28, 2021Lubricating Oil Compositions Comprising A Biodiesel Fuel And An AntioxidantCHEVRON ORONITE1
Feb 21, 2018Lubricant CompositionIDEMITSU KOSAN1
Sep 10, 2025Process For Preparing Polymers And Compositions ThereofTHE LUBRIZOL1
Sep 26, 2018A Lubricating Oil CompositionINFINEUM1
Jun 7, 2023Freezing DeviceDAIKIN INDUSTRIES1