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IP Verse

Celanese competitive analysis

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Latest oppositions filed by Celanese

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

Last updated on: Nov 13, 2025
Patent NumberTitleApplicantOpposition Date

Get instant updates on new opposition filings by the company

EP3784702
Method For Cleaning A Polymerisation ReactorWACKER CHEMIEOct 5, 2022
EP3662770
Electronic Cigarette Tip Tow Band, Electronic Cigarette Tip, Method For Producing Electronic Cigarette Tip Tow Band, And Method For Producing Electronic Cigarette TipDAICELNov 19, 2021
EP3283569
Aqueous Dispersion And Uses ThereofCOVESTRO NETHERLANDSSep 8, 2021
EP3369722
Acetic Acid Production MethodDAICELOct 1, 2020
EP3500536
Composite Heat Insulation SystemWACKER CHEMIESep 24, 2020
EP3398930
Method For Producing Acetic AcidDAICELAug 19, 2020
EP3369721
Acetic Acid Production MethodDAICELJul 14, 2020
EP3333147
Production Method For Acetic AcidDAICELApr 9, 2020
EP3207102
Vinyl Acetate-Ethylene / Acrylic Polymer Emulsions And Products And Methods Relating TheretoAVERY DENNISONOct 4, 2019
EP2628720
Acetic Acid Production MethodDAICELAug 7, 2019

Latest patents of Celanese opposed by its competitors

Explore Celanese'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: Nov 13, 2025
Patent NumberPublication DateTitleTotal Oppositions
EP3317260
Jun 25, 2025Acesulfame Potassium Compositions And Processes For Producing Same1
EP3322695
Jan 1, 2025Acesulfame Potassium Compositions And Processes For Producing Same2
EP3210978
Sep 6, 2023Process For Producing Acesulfame Potassium2
EP3319948
Jun 30, 2021Acesulfame Potassium Compositions And Processes For Producing Same1
EP3075667
Apr 21, 2021Method For Producing A Fiber Bale1
EP3555217
Feb 17, 2021Waterborne Acrylic Dispersions With High Biorenewable Content1
EP2773230
Jul 22, 2020Products Of High Denier Per Filament And Low Total Denier Tow Bands1
EP3319949
Jul 22, 2020Acesulfame Potassium Compositions And Processes For Producing Same2
EP2031049
Mar 6, 2019Chemical Delivery Product And Process For Making The Same2
EP1861462
Sep 5, 2018Dispersion Composition For Highly Flexible, Waterproof, Hydraulically Binding Tile Adhesive1

Latest PTAB cases involving Celanese

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

Last updated on: Nov 15, 2025
Proceeding NumberFiling DatePetitionerRespondentStatus

Get alerts for PTAB Cases involving Celanese

IPR2019-00313Nov 12, 2018CELANESEDAICELTerminated
IPR2017-00162Oct 31, 2016CELANESEDAICELTerminated
IPR2017-00163Oct 31, 2016CELANESEDAICELFinal Written Decision
IPR2017-00164Oct 31, 2016CELANESEDAICELTerminated
IPR2017-00165Oct 31, 2016CELANESEDAICELFinal Written Decision
IPR2017-00166Oct 31, 2016CELANESEDAICELFinal Written Decision
IPR2015-00170Oct 28, 2014DAICELCELANESEFinal Written Decision
IPR2015-00171Oct 28, 2014DAICELCELANESEFinal Written Decision
IPR2015-00173Oct 28, 2014DAICELCELANESEFinal Written Decision
IPR2014-01514Sep 17, 2014DAICELCELANESEInstitution Denied

Peer Comparison New

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

Last updated on: Nov 13, 2025
CompanyOppositions FiledOppositions FacedPTAB Cases FiledPTAB Cases Faced
CELANESE16965
BASF220214713
DAICEL22956
HAMMER11 - - -