IP Verse

Chang competitive analysis

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Latest oppositions filed by Chang

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

Last updated on: Oct 23, 2025
Patent NumberTitleApplicantOpposition Date

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EP3478806
Lubricating OilGREEN FRIXJan 14, 2021
EP3478807
Lubricating OilGREEN FRIXJan 14, 2021
EP3479660
Device For Electrically Processing A Fatty Substance Of Plant OriginGREEN FRIXJan 8, 2021
EP2952113
Manufacturing Process Of Shoe With Internally Waterproofed Fabric UpperCALZATURIFICIO MODA ITALIANADec 1, 2017

Latest patents of Chang opposed by its competitors

Explore Chang'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: Oct 23, 2025
Patent NumberGrant DateTitleTotal Oppositions
EP3538693
Feb 21, 2024Bio-Based Meg And Polyester Fiber Compositions And Methods Of Making The Same2
EP3269832
Oct 19, 2022Method Of Recycling And Processing Waste Battery1
EP3660949
Jun 1, 2022Power Tool System And Battery Pack Thereof1
EP3231913
Sep 4, 2019Machine Head Transmission Device Of Warp Knitting Machine1
EP2950816
Jul 31, 2019The Use Of Dna Sequences Encoding An Interferon As Vaccine Adjuvants1
EP3231914
May 15, 2019Crankshaft And Connecting Rod Mechanism Of Needle Bed Of Warp Knitting Machine With Single Needle Bed1
EP3231915
Apr 10, 2019Sinker Crankshaft And Connecting Rod Mechanism Of Warp Knitting Machine With Single Needle Bed1
EP3050905
Nov 22, 2017Polyvinyl Alcohol And Purification Method Thereof1

Latest publications and patents of Chang New

Explore the latest publications and patents granted to Chang, showcasing their recent innovations and technological advancements.

Last updated on: Oct 19, 2025
Publication NumberPublication DateTitleLegal Status

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EP3538693
Feb 21, 2024Bio-Based Meg And Polyester Fiber Compositions And Methods Of Making The SameGranted And Under Opposition
EP3269832
Oct 19, 2022Method Of Recycling And Processing Waste BatteryPatent Maintained As Amended
EP3660949
Jun 1, 2022Power Tool System And Battery Pack ThereofGranted And Under Opposition
EP3692829
Aug 12, 2020Electronic Cigarette And Method For Pre-Heating Electronic Cigarette -
EP3231913
Sep 4, 2019Machine Head Transmission Device Of Warp Knitting MachineRevoked
EP2950816
Jul 31, 2019The Use Of Dna Sequences Encoding An Interferon As Vaccine AdjuvantsRevoked
EP2019208817
Jul 11, 2019Mouthpiece Assembly, Atomizer And Electronic Cigarette -
EP3231914
May 15, 2019Crankshaft And Connecting Rod Mechanism Of Needle Bed Of Warp Knitting Machine With Single Needle BedOpposition Rejected
EP3231915
Apr 10, 2019Sinker Crankshaft And Connecting Rod Mechanism Of Warp Knitting Machine With Single Needle BedOpposition Rejected
EP2019029326
Jan 31, 2019Cigarette Cartridge And Electronic Cigarette Having The Same -

Latest PTAB cases involving Chang

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

Last updated on: Oct 25, 2025
Proceeding NumberFiling DatePetitionerRespondentStatus

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IPR2017-00341Nov 28, 2016CHANGER & DRESSERCOPPERHEAD INDUSTRIALFinal Written Decision
IPR2015-01137May 1, 2015CHANGER & DRESSER002152706 ONTARIO OPERATING COPPERHEAD INDUSTRIALInstitution Denied

Peer Comparison New

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

Last updated on: Oct 23, 2025
CompanyOppositions FiledOppositions FacedPTAB Cases FiledPTAB Cases Faced
NANCHANG OCEAN PLASTIC1 - - -
CALZATURIFICIO MODA ITALIANA - 1 - -