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Sumitomo Seika Chemicals competitive analysis

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Latest patents of Sumitomo Seika Chemicals opposed by its competitors

Explore Sumitomo Seika Chemicals'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
EP1882701
Aug 14, 2024Process For Production Of Water-Absorbing Resin Particles, Water-Absorbing Resin Particles Made By The Process, And Absorbents And Absorbent Articles Made By Using The Particles1
EP2615117
Dec 27, 2023Water Absorbent Resin And Method For Producing Same1
EP2993190
May 4, 2022Water-Absorbent Resin And Absorbent Article1
EP2998325
Nov 4, 2020Water-Absorbent Resin And Absorbent Article1
EP3153529
Jul 31, 2019Water-Absorbing Resin And Absorbent Article1
EP2893974
Nov 8, 2017Water-Absorbing Resin, Water-Absorbing Body, And Water-Absorbing Product1
EP1291368
May 31, 2017Water-Absorbing Resin Suitable For Absorbing Viscous Liquid Containing High-Molecular Compound, And Absorbent And Absorbent Article Each Comprising The Same1
EP2740747
Mar 15, 2017Water Absorbing Resin Particles, Method For Manufacturing Water Absorbing Resin Particles, Absorption Body, Absorptive Article, And Water-Sealing Material1

Latest publications and patents of Sumitomo Seika Chemicals New

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

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

Get instant update for new patents of Sumitomo Seika Chemicals

EP1882701
Aug 14, 2024Process For Production Of Water-Absorbing Resin Particles, Water-Absorbing Resin Particles Made By The Process, And Absorbents And Absorbent Articles Made By Using The ParticlesPatent Maintained As Amended
EP2615117
Dec 27, 2023Water Absorbent Resin And Method For Producing SamePatent Maintained As Amended
EP2993190
May 4, 2022Water-Absorbent Resin And Absorbent ArticlePatent Maintained As Amended
EP2998325
Nov 4, 2020Water-Absorbent Resin And Absorbent ArticlePatent Maintained As Amended
EP3153529
Jul 31, 2019Water-Absorbing Resin And Absorbent ArticleRevoked
EP2893974
Nov 8, 2017Water-Absorbing Resin, Water-Absorbing Body, And Water-Absorbing ProductRevoked
EP1291368
May 31, 2017Water-Absorbing Resin Suitable For Absorbing Viscous Liquid Containing High-Molecular Compound, And Absorbent And Absorbent Article Each Comprising The SameRevoked
EP2740747
Mar 15, 2017Water Absorbing Resin Particles, Method For Manufacturing Water Absorbing Resin Particles, Absorption Body, Absorptive Article, And Water-Sealing MaterialRevoked

Latest PTAB cases involving Sumitomo Seika Chemicals

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

Peer Comparison New

IP litigation analysis comparing Sumitomo Seika Chemicals 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
SUMITOMO SEIKA CHEMICALS - 8 - -
NIPPON SHOKUBAI3518 - -