AT&T Corp.

flowchart LR
    Nat_and_t["AT&T Corp."]
    Ngreenberg_albert_g_kompella_ramana_rao_snoeren_alex_c_yates_["Greenberg, Albert G.; Kompella, Ramana…"]
    Nat_and_t_properties_nevada["AT&T Properties, LLC, Nevada"]
    Nncr["NCR Corporation"]
    Nlucent["Lucent Technologies Inc."]
    Nat_and_t_ipm["AT&T IPM Corp."]
    Ndonald_a_collins_jr_andrew_b_nye_iii["Donald A. Collins, Jr.; Andrew B. Nye,…"]
    Nrobert_f_sadler["Robert F. Sadler"]
    Nncr_voyix["NCR Voyix Corporation"]
    Ndiepstraten_wilhelmus_j_m_van_bokhorst_hendrik_van_driest_ha["Diepstraten, Wilhelmus J. M.; van Bokho…"]
    Nsanjoy_paul_ethendranath_n_bommaiah_katherine_h_guo_markus_h["Sanjoy Paul, Ethendranath N. Bommaiah,…"]
    Nalcatel_lucent_usa["Alcatel-Lucent USA Inc."]
    Nbonnie_p_hitzeman["Bonnie P. Hitzeman"]
    Ncoss_michael_john_majette_david_l_sharp_ronald_l["Coss, Michael John; Majette, David L.;…"]
    Nriverstone_networks["RIVERSTONE NETWORKS, INC."]
    Nmichael_john_coss_david_l_majette_ronald_l_sharp["Michael John Coss; David L. Majette; Ro…"]
    Nthe_chase_manhattan_bank_as_collateral_agent["The Chase Manhattan Bank, as Collateral…"]
    Njpmorgan_chase_bank_n_a_formerly_the_chase_manhattan_bank_as["JPMorgan Chase Bank, N.A. (formerly The…"]
    Npenny_lynne_bright_jing_chen["Penny Lynne Bright; Jing Chen"]
    Nthomas_f_la_porta_kazutaka_murakami_krishan_kumar_sabnani_ro["Thomas F. La Porta; Kazutaka Murakami;…"]
    Ncao_zhirou_wang_zheng["CAO, ZHIROU; WANG, ZHENG"]
    Nrichard_d_j_van_nee["Richard D. J. van Nee"]
    Nagere_systems_guardian["Agere Systems Guardian Corp."]
    Nagere_systems["Agere Systems LLC"]
    Ngrewe_anthony_james_shelby_kevin_alan["Grewe, Anthony James; Shelby, Kevin Alan"]
    Ngreenberg_albert_g_kompella_ramana_rao_snoeren_alex_c_yates_ -->|"2009 · Assignment · 7577099"| Nat_and_t
    Nat_and_t -->|"2011 · Nunc pro tunc assignment · 6826694"| Nat_and_t_properties_nevada
    Nncr -->|"1996 · Assignment · 6707867"| Nat_and_t
    Nat_and_t -->|"1996 · Assignment · 6707867"| Nlucent
    Nat_and_t_ipm -->|"1995 · Merger · 5670730"| Nat_and_t
    Nat_and_t -->|"1996 · Assignment · 5670730"| Nlucent
    Ndonald_a_collins_jr_andrew_b_nye_iii -->|"1992 · Assignment · 5497853"| Nncr
    Nrobert_f_sadler -->|"1999 · Assignment · 6571218"| Nncr
    Nncr -->|"2023 · Change of Name · 6571218"| Nncr_voyix
    Nncr -->|"2023 · Change of Name · 6571218"| Nncr_voyix
    Ndiepstraten_wilhelmus_j_m_van_bokhorst_hendrik_van_driest_ha -->|"1993 · Assignment · 6707867"| Nncr
    Nsanjoy_paul_ethendranath_n_bommaiah_katherine_h_guo_markus_h -->|"2000 · Assignment · 6708213"| Nlucent
    Nlucent -->|"2016 · Merger · 6708213"| Nalcatel_lucent_usa
    Nbonnie_p_hitzeman -->|"1999 · Assignment · 6760312"| Nlucent
    Ncoss_michael_john_majette_david_l_sharp_ronald_l -->|"1998 · Assignment · 7143438"| Nlucent
    Nlucent -->|"Merger · 7143438"| Nalcatel_lucent_usa
    Nriverstone_networks -->|"2014 · Assignment · 6046979"| Nlucent
    Nlucent -->|"2014 · Merger · 6046979"| Nalcatel_lucent_usa
    Nmichael_john_coss_david_l_majette_ronald_l_sharp -->|"1997 · Assignment · 6098172"| Nlucent
    Nlucent -->|"2001 · Security Agreement · 6098172"| Nthe_chase_manhattan_bank_as_collateral_agent
    Njpmorgan_chase_bank_n_a_formerly_the_chase_manhattan_bank_as -->|"2006 · Release · 6098172"| Nlucent
    Npenny_lynne_bright_jing_chen -->|"2001 · Assignment · 6950876"| Nlucent
    Nthomas_f_la_porta_kazutaka_murakami_krishan_kumar_sabnani_ro -->|"2001 · Assignment · 7522632"| Nlucent
    Nlucent -->|"2009 · Merger · 7522632"| Nalcatel_lucent_usa
    Ncao_zhirou_wang_zheng -->|"2014 · Assignment · 6888797"| Nlucent
    Nrichard_d_j_van_nee -->|"1998 · Assignment · 6452958"| Nlucent
    Nlucent -->|"2004 · Assignment · 6452958"| Nagere_systems_guardian
    Nlucent ==>|"⚖️ 2001 · Assignment · 6707867"| Nagere_systems
    Nlucent ==>|"⚖️ 2001 · Assignment · 5670730"| Nagere_systems
    Ngrewe_anthony_james_shelby_kevin_alan -->|"1995 · Assignment · 5670730"| Nat_and_t_ipm
    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 Nat_and_t focal
    class Nncr operating
    class Nlucent operating
    class Nat_and_t_ipm operating
    class Nncr_voyix operating
    class Nalcatel_lucent_usa operating
    class Nriverstone_networks operating
    class Nagere_systems_guardian operating
    class Nagere_systems operating