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Explore patent oppositions filed by Chang against competitors, revealing strategic technology disputes and market positioning. Monitor opposition details, timelines, and disputed innovations to understand competitive dynamics and IP enforcement strategy.

Patent NumberTitleApplicantOpposition Date

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EP3478806Lubricating OilGREEN FRIXJan 14, 2021
EP3478807Lubricating OilGREEN FRIXJan 14, 2021
EP3479660Device For Electrically Processing A Fatty Substance Of Plant OriginGREEN FRIXJan 8, 2021
EP2952113Manufacturing Process Of Shoe With Internally Waterproofed Fabric UpperCALZATURIFICIO MODA ITALIANADec 1, 2017

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.

Patent NumberGrant DateTitleTotal Oppositions
EP3538693Feb 21, 2024Bio-Based Meg And Polyester Fiber Compositions And Methods Of Making The Same2
EP3269832Oct 19, 2022Method Of Recycling And Processing Waste Battery1
EP3660949Jun 1, 2022Power Tool System And Battery Pack Thereof1
EP3231913Sep 4, 2019Machine Head Transmission Device Of Warp Knitting Machine2
EP2950816Jul 31, 2019The Use Of Dna Sequences Encoding An Interferon As Vaccine Adjuvants1
EP3231914May 15, 2019Crankshaft And Connecting Rod Mechanism Of Needle Bed Of Warp Knitting Machine With Single Needle Bed2
EP3231915Apr 10, 2019Sinker Crankshaft And Connecting Rod Mechanism Of Warp Knitting Machine With Single Needle Bed2
EP3050905Nov 22, 2017Polyvinyl Alcohol And Purification Method Thereof1