Asserter profile

HITACHI MAXELL, LTD.

NPE1 patent now7 ever0 cases filed during tenure5 connections

Also seen as: Hitachi Maxell, Ltd.

PTAB exposure

4of this entity’s patents have been challenged at PTAB (4 total proceedings). 3 currently have active proceedings.

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
    Nhitachi_maxell["HITACHI MAXELL, LTD."]
    Neriko_nagata_shinji_onodera_satomi_morishita_naoya_oka_masaa["Eriko Nagata, Shinji ONODERA, Satomi Mo…"]
    Nmaxell["MAXELL, LTD."]
    Nhitachi_consumer_electronics["Hitachi Consumer Electronics Co., Ltd."]
    Nhitachi["Hitachi, Ltd."]
    Nmaxell_japan["MAXELL, LTD., JAPAN"]
    Nk_mizuno_ip_management["K. MIZUNO IP MANAGEMENT LLC"]
    Nhashimoto_yasunobu_masuoka_nobuo["HASHIMOTO, YASUNOBU; MASUOKA, NOBUO"]
    Nhitachi_lg_data_storage["Hitachi-LG Data Storage, Inc."]
    Nmiyano_masaaki_arai_ikuya_masuda_kozo["MIYANO, MASAAKI; ARAI, IKUYA; MASUDA, K…"]
    Nhitachi_consumer_electronics_japan["HITACHI CONSUMER ELECTRONICS CO., LTD.,…"]
    Nfujiwara_shinji_mizuno_kazuhiko_watanabe_satoru_kawamura_nob["FUJIWARA, SHINJI; MIZUNO, KAZUHIKO; WAT…"]
    Ntakeshi_hoshino_youichi_horii_tadaaki_ishikawa_yukiko_ichige["Takeshi Hoshino, Youichi Horii, Tadaaki…"]
    Nseiji_kageyama_satoru_matsumoto_makoto_kitagawa_takuya_shima["Seiji Kageyama; Satoru Matsumoto; Makot…"]
    Nricoh_printing_systems["RICOH PRINTING SYSTEMS, LTD."]
    Nnagai_yasuhiko_fujiyama_tatsuya_arai_masato_tsunoda_mitsuhir["Nagai, Yasuhiko; Fujiyama, Tatsuya; Ara…"]
    Nmachida_yoshihiro_tsutsumi_nobuhiro_kamogawa_kouji["Machida, Yoshihiro; Tsutsumi, Nobuhiro;…"]
    Nkatsuhiko_tsunehara_mikio_kuwahara["Katsuhiko Tsunehara; Mikio Kuwahara"]
    Nakio_nagasaka_takafumi_miyatake_yoshikazu_amano_shigeru_hira["Akio Nagasaka; Takafumi Miyatake; Yoshi…"]
    Ndaikoku_takahiro_tsubaki_shigeyasu["DAIKOKU, TAKAHIRO; TSUBAKI, SHIGEYASU"]
    Nhitachi_maxell_japan["HITACHI MAXELL, LTD., JAPAN"]
    Neriko_nagata_shinji_onodera_satomi_morishita_naoya_oka_masaa -->|"2016 · Assignment · 9900569"| Nhitachi_maxell
    Nhitachi_maxell -->|"2017 · Assignment · 9900569"| Nmaxell
    Nhitachi_maxell -->|"2018 · Assignment · 11026088"| Nmaxell
    Nhitachi_consumer_electronics -->|"2014 · Assignment · 7577417"| Nhitachi_maxell
    Nhitachi_maxell -->|"2017 · Assignment · 7577417"| Nmaxell
    Nhitachi -->|"2014 · Assignment · 7952645"| Nhitachi_maxell
    Nhitachi_maxell -->|"2018 · Assignment · 7952645"| Nmaxell
    Nhitachi_maxell -->|"2017 · Change of Name · 8180198"| Nmaxell_japan
    Nhitachi_consumer_electronics -->|"2014 · Assignment · 8170394"| Nhitachi_maxell
    Nhitachi_maxell ==>|"⚖️ 2017 · Assignment · 8170394"| Nmaxell
    Nhitachi_consumer_electronics -->|"2014 · Assignment · 6928292"| Nhitachi_maxell
    Nhitachi_maxell -->|"2017 · Assignment · 6928292"| Nmaxell
    Nhitachi_consumer_electronics -->|"2014 · Assignment · 5974218"| Nhitachi_maxell
    Nmaxell -->|"2023 · Assignment · 9900569"| Nk_mizuno_ip_management
    Nhashimoto_yasunobu_masuoka_nobuo -->|"2019 · Assignment · 10812646"| Nmaxell
    Nmaxell -->|"2021 · Merger · 8471950"| Nmaxell_japan
    Nmaxell -->|"2021 · Merger · 8180198"| Nmaxell_japan
    Nhitachi_lg_data_storage -->|"2023 · Assignment · 11812091"| Nmaxell
    Nhitachi -->|"2012 · Assignment · 7577417"| Nhitachi_consumer_electronics
    Nhitachi -->|"2013 · Assignment · 8170394"| Nhitachi_consumer_electronics
    Nhitachi -->|"2013 · Assignment · 6928292"| Nhitachi_consumer_electronics
    Nhitachi -->|"2013 · Assignment · 5974218"| Nhitachi_consumer_electronics
    Nmiyano_masaaki_arai_ikuya_masuda_kozo -->|"2006 · Assignment · 7952645"| Nhitachi
    Nhitachi -->|"2013 · Assignment · 8180198"| Nhitachi_consumer_electronics_japan
    Nfujiwara_shinji_mizuno_kazuhiko_watanabe_satoru_kawamura_nob -->|"2006 · Assignment of Assignor's Interest · 7587430"| Nhitachi
    Ntakeshi_hoshino_youichi_horii_tadaaki_ishikawa_yukiko_ichige -->|"2012 · Assignment · 8674849"| Nhitachi
    Nseiji_kageyama_satoru_matsumoto_makoto_kitagawa_takuya_shima -->|"1994 · Assignment · 5625757"| Nhitachi
    Nhitachi -->|"2005 · Assignment · 5625757"| Nricoh_printing_systems
    Nnagai_yasuhiko_fujiyama_tatsuya_arai_masato_tsunoda_mitsuhir -->|"2000 · Assignment · 7089581"| Nhitachi
    Nmachida_yoshihiro_tsutsumi_nobuhiro_kamogawa_kouji -->|"2006 · Assignment · 8170394"| Nhitachi
    Nkatsuhiko_tsunehara_mikio_kuwahara -->|"2002 · Assignment · 6928292"| Nhitachi
    Nakio_nagasaka_takafumi_miyatake_yoshikazu_amano_shigeru_hira -->|"1996 · Assignment · 5974218"| Nhitachi
    Ndaikoku_takahiro_tsubaki_shigeyasu -->|"1997 · Assignment · 5818694"| Nhitachi
    Nhitachi_maxell_japan -->|"2017 · Assignment · 8471950"| Nmaxell_japan
    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 Nhitachi_maxell focal
    class Nmaxell npe
    class Nhitachi_consumer_electronics operating
    class Nhitachi operating
    class Nmaxell_japan operating
    class Nk_mizuno_ip_management shell
    class Nhitachi_lg_data_storage operating
    class Nhitachi_consumer_electronics_japan operating
    class Nricoh_printing_systems operating
    class Nhitachi_maxell_japan operating

Patents currently held (1)

Patents previously held (6)

Connected entities (5)

Correspondent attorneys (3)

Attorneys / firms recorded with USPTO when this entity received a patent. Recurrence is the signal — many firms do both NPE and operating-company patent work, so a single appearance doesn’t mean much.