Asserter profile

SEIKAGAKU CORPORATION

operating company1 patent now1 ever0 cases filed during tenure1 connection

PTAB exposure

1of this entity’s patents have been challenged at PTAB (1 total proceeding). 1 had claims invalidated.

Final written decisions are public record. The invalidation grounds usually carry over as § 102 / § 103 ammunition in district court — see IPR estoppel.

Two-hop network

Edges marked ⚖️ overlap with at least one infringement suit filed during the receiving entity’s tenure with the patent. Bold-bordered = this entity. Red = NPE; orange = shell LLC; green = defensive aggregator; blue = operating company.

flowchart LR
    Nseikagaku["SEIKAGAKU CORPORATION"]
    Nshun_ichiro_kawabata_hikaru_mizumura_toshio_oda["Shun-ichiro Kawabata, Hikaru Mizumura,…"]
    Nshun_ichiro_kawabata_hikaru_mizumura_toshio_oda -->|"2019 · Assignment · 11236318"| Nseikagaku
    classDef focal fill:#fef3c7,stroke:#92400e,stroke-width:3px,color:#1c1917
    classDef npe fill:#fee2e2,stroke:#be123c,stroke-width:2px,color:#1c1917
    classDef shell fill:#fed7aa,stroke:#9a3412,stroke-width:2px,color:#1c1917
    classDef defensive fill:#dcfce7,stroke:#15803d,stroke-width:2px,color:#1c1917
    classDef operating fill:#e0f2fe,stroke:#075985,stroke-width:1px,color:#1c1917
    class Nseikagaku focal

Patents currently held (1)

Connected entities (1)