TechnologyPatent OppositionCompetitive Analysis

In the competitive field of Patent Classification Index System, 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 Patent Classification Index System 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.

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

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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: Jul 31, 2025
Patent NumberTitleApplicantOpposition DateOpposition Name

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Functional Fluids Comprising Low-Viscosity Polyalpha-Olefin Base StockEXXONMOBIL CHEMICAL PATENTSApr 24, 2025CHEVRON PHILLIPS CHEMICAL LP
Use Of Lubricant Compositions For Direct Injection EnginesTHE LUBRIZOLApr 10, 2025INFINEUM
Lubricant Composition For Gasoline Engines And Method For Producing SameIDEMITSU KOSANFeb 7, 2025AFTON CHEMICAL
Gear Lubricant CompositionTOTALENERGIES ONETECHDec 12, 2024NESTE OYJ
Lubricating Oil Compositions For Automatic TransmissionsCHEVRON JAPANOct 23, 2024AFTON CHEMICAL
Lubricating Oil CompositionIDEMITSU KOSANOct 15, 2024AFTON CHEMICAL
Use Of Ester Base Stocks To Improve Viscosity Index And Efficiency In Driveline And Industrial Gear Lubricating FluidsTHE LUBRIZOLMay 22, 2024AFTON CHEMICAL
Freezing DeviceDAIKIN INDUSTRIESMar 7, 2024BITZER KUHLMASCHINENBAU
Titanium Compounds And Complexes As Additives In LubricantsTHE LUBRIZOLMay 24, 2023AFTON CHEMICAL
Lubricating Oil Composition And Method For Reducing Friction In Internal Combustion EnginesIDEMITSU KOSANDec 15, 2022AFTON CHEMICAL

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: Jul 31, 2025
Patent NumberGrant DateTitleApplicantTotal Oppositions
Aug 22, 2018Refrigerating ApparatusDAIKIN INDUSTRIES2
Aug 12, 2020Lubricating Oil CompositionsINFINEUM2
Jun 14, 2023Highly Branched Sulfonates For Drive-Line ApplicationsTHE LUBRIZOL1
Sep 20, 2017Pipe Screw JointSUMITOMO METAL INDUSTRIES1
Mar 20, 2019Process For Preparing Polymers And Compositions ThereofTHE LUBRIZOL1
Jun 7, 2023Freezing DeviceDAIKIN INDUSTRIES1
Feb 21, 2018Lubricant CompositionIDEMITSU KOSAN1
Sep 26, 2018A Lubricating Oil CompositionINFINEUM1
Aug 9, 2017Engine Oil Formulations For Biodiesel FuelsTHE LUBRIZOL1
Apr 28, 2021Lubricating Oil Compositions Comprising A Biodiesel Fuel And An AntioxidantCHEVRON ORONITE1