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Explore Asahi Kasei E Materials'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: Jun 26, 2025
Patent NumberGrant DateTitleTotal Oppositions
EP2672546May 30, 2018Polyolefin Microporous Membrane1
EP2708359Feb 21, 2018Laminated Separator, Polyolefin Microporous Membrane, And Separator For Electricity Storage Device1