Asserter profile

Rambus Inc.

NPE1 patent now19 ever0 cases filed during tenure8 connections

Also seen as: RAMBUS INC. · Rambus International Ltd. · RAMBUS INTERNATIONAL LTD.

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
    Nrambus["Rambus Inc."]
    Noh_kyung_suk_shaeffer_ian_p["OH, KYUNG SUK, SHAEFFER, IAN P."]
    Nsignal["SIGNAL LLP"]
    Noh_kyung_s_shaeffer_ian_p["Oh, Kyung S.; Shaeffer, Ian P."]
    Nware_frederick_a_wang_yuanlong["WARE, FREDERICK A.; WANG, YUANLONG"]
    Noh_kyung_s_and_shaeffer_ian_p["OH, KYUNG S. AND SHAEFFER, IAN P."]
    Nsolid_state_opto["Solid State Opto Limited"]
    Nrambus_delaware["Rambus Delaware LLC"]
    Nkamiyacho_ip["KAMIYACHO IP HOLDINGS"]
    Nparker_jeffery_r["PARKER, JEFFERY R."]
    Njeffery_r_parker["Jeffery R. Parker"]
    Nlee_mang_shiang["Lee, Mang-Shiang"]
    Nparker_jeffery_r_mccollum_timothy_a["Parker, Jeffery R.; McCollum, Timothy A."]
    Nparker_jeffery_r_and_mccollum_timothy_a["Parker, Jeffery R. and McCollum, Timoth…"]
    Nacacia_research["ACACIA RESEARCH GROUP LLC"]
    Nzycube["ZYCUBE CO., LTD."]
    Noh_kyung_suk_shaeffer_ian_p -->|"2018 · Assignment of Assignor's Interest · 10056902"| Nrambus
    Nrambus -->|"2025 · Assignment of Assignor's Interest · 10056902"| Nsignal
    Noh_kyung_s_shaeffer_ian_p -->|"2009 · Assignment of Assignor's Interest · 10115439"| Nrambus
    Nrambus -->|"2025 · Assignment of Assignor's Interest · 10115439"| Nsignal
    Nware_frederick_a_wang_yuanlong -->|"2014 · ASSIGNMENT OF ASSIGNORS INTEREST · 9092352"| Nrambus
    Nrambus -->|"2025 · ASSIGNMENT · 9092352"| Nsignal
    Nrambus -->|"2025 · Assignment · 10944400"| Nsignal
    Noh_kyung_s_and_shaeffer_ian_p -->|"2009 · ASSIGNMENT · 8947962"| Nrambus
    Nrambus -->|"2025 · ASSIGNMENT · 8947962"| Nsignal
    Nsolid_state_opto -->|"2010 · ASSIGNMENT · 7300194"| Nrambus
    Nsolid_state_opto -->|"2010 · Assignment · 7384177"| Nrambus
    Nrambus -->|"2013 · Assignment · 7384177"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 7434974"| Nrambus
    Nrambus -->|"2013 · Assignment · 7434974"| Nrambus_delaware
    Nrambus -->|"2013 · Assignment · 8215816"| Nrambus_delaware
    Nsolid_state_opto -->|"Assignment · 8215816"| Nrambus
    Nsolid_state_opto -->|"2010 · Assignment · 7404660"| Nrambus
    Nrambus -->|"2013 · Assignment · 7404660"| Nrambus_delaware
    Nsolid_state_opto -->|"2009 · Assignment · 6755547"| Nrambus
    Nrambus -->|"2013 · Assignment · 6755547"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 7434973"| Nrambus
    Nrambus -->|"2013 · Assignment · 7434973"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 7914196"| Nrambus
    Nrambus -->|"2013 · Assignment · 7914196"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 5618096"| Nrambus
    Nrambus -->|"2013 · Assignment · 5618096"| Nrambus_delaware
    Nsolid_state_opto -->|"2009 · Assignment · 7090389"| Nrambus
    Nrambus -->|"2013 · Assignment · 7090389"| Nrambus_delaware
    Nsolid_state_opto -->|"2009 · Assignment · 7524101"| Nrambus
    Nrambus -->|"2013 · Assignment · 7524101"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 6886956"| Nrambus
    Nrambus -->|"2013 · Assignment · 6886956"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 6508563"| Nrambus
    Nrambus -->|"2013 · Assignment · 6508563"| Nrambus_delaware
    Nsolid_state_opto -->|"2010 · Assignment · 5613751"| Nrambus
    Nrambus -->|"2013 · Assignment · 5613751"| Nrambus_delaware
    Nkamiyacho_ip -->|"2014 · Assignment · 7906363"| Nrambus
    Nparker_jeffery_r -->|"2005 · ASSIGNMENT · 7300194"| Nsolid_state_opto
    Nparker_jeffery_r -->|"2005 · Assignment · 7384177"| Nsolid_state_opto
    Njeffery_r_parker -->|"2006 · Assignment · 7434974"| Nsolid_state_opto
    Nparker_jeffery_r -->|"2006 · Assignment · 7404660"| Nsolid_state_opto
    Njeffery_r_parker -->|"2002 · Assignment · 6755547"| Nsolid_state_opto
    Nlee_mang_shiang -->|"2001 · Assignment · 5618096"| Nsolid_state_opto
    Nparker_jeffery_r_mccollum_timothy_a -->|"2006 · Assignment · 7090389"| Nsolid_state_opto
    Nparker_jeffery_r_and_mccollum_timothy_a -->|"2006 · Assignment · 7524101"| Nsolid_state_opto
    Nparker_jeffery_r -->|"2008 · Assignment · 7524101"| Nsolid_state_opto
    Nlee_mang_shiang -->|"2001 · Assignment · 5613751"| Nsolid_state_opto
    Nrambus_delaware -->|"2013 · ASSIGNMENT · 7300194"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7384177"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7434974"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 8215816"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7404660"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 6755547"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7434973"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7914196"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 7524101"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 6886956"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 6508563"| Nacacia_research
    Nrambus_delaware -->|"2013 · Assignment · 5613751"| Nacacia_research
    Nzycube -->|"2012 · Assignment · 7906363"| Nkamiyacho_ip
    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 Nrambus focal
    class Nsignal npe
    class Nsolid_state_opto shell
    class Nrambus_delaware npe
    class Nacacia_research npe
    class Nzycube operating

Patents currently held (2)

US 8215816? → present
US 79063632014-01-30 → present

Patents previously held (17)

US 101154392009-12-08 → 2025-09-29
US 89479622009-12-08 → 2025-09-29
US 65085632013-03-01 → 2013-03-04
US 73001942013-03-04 → 2013-06-26
US 73841772013-03-04 → 2013-03-04
US 74349742013-03-04 → 2013-03-04
US 74046602013-03-04 → 2013-03-04
US 67555472013-03-04 → 2013-03-04
US 74349732013-03-04 → 2013-03-04
US 79141962013-03-04 → 2013-03-04
US 56180962013-03-04 → 2013-03-04
US 70903892013-03-04 → 2013-03-04
US 75241012013-03-04 → 2013-03-04
US 68869562013-03-04 → 2013-03-04
US 56137512013-03-04 → 2013-03-04
US 90923522014-02-12 → 2025-10-15
US 100569022018-04-25 → 2025-10-15

Connected entities (8)

Solid State Opto Limitedshell LLC14 patents
Rambus Delaware LLCNPE13 patents
SIGNAL LLPNPE5 patents
OH, KYUNG SUK, SHAEFFER, IAN P.individual1 patent
Oh, Kyung S.; Shaeffer, Ian P.individual1 patent
WARE, FREDERICK A.; WANG, YUANLONGindividual1 patent
OH, KYUNG S. AND SHAEFFER, IAN P.individual1 patent
KAMIYACHO IP HOLDINGSunclassified1 patent

Correspondent attorneys (6)

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.

STEPHEN J. REILLY· KENYON & KENYON1 appearance
(no name)· RAMBUS INC.1 appearance
(no name)· WEAVER AUSTIN VILLENEUVE & SAMPSON1 appearance
(no name)· NIXON & VANDERHYE1 appearance
(no name)· BEYER WEAVER1 appearance
(no name)· KENYON & KENYON1 appearance