Plaintiff
13 cases as plaintiff.
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Sol IP, LLC is a private intellectual-property licensing company organized as a Virginia limited liability company, with a principal place of business listed in court filings at 8287 Spring Leaf Court, Vienna, Virginia. It is not publicly traded and does not disclose revenue or headcount; no parent company is identified in the sources reviewed. Its name appears in litigation records as both "Sol IP, LLC" and "Sol IP."
Operations. Sol IP does not make or sell products. It describes itself as holding an exclusive license to more than 600 patents and applications covering wireless telecommunications, and the asserted patents originate with the Electronics and Telecommunications Research Institute (ETRI), a South Korean government-funded research institute in Daejeon. ETRI transferred all substantial rights in at least some of these patents to Sol IP, making Sol IP the party defending and enforcing them. The portfolio spans 3GPP LTE/LTE-Advanced (4G) standards (cell search, carrier aggregation, ACK/NACK transmission, MIMO) and WLAN/Wi-Fi technology. Sol IP is a licensor in Avanci's 4G and 5G vehicle licensing programs and joined Avanci's Wi-Fi platform (Wi-Fi 6 Vehicles) as a licensor in 2026.
Litigation posture. Sol IP is a non-practicing entity: all 11 tracked cases list it as plaintiff and none as defendant. Its campaigns cluster in the Eastern District of Texas, Marshall Division, a historically plaintiff-friendly venue, with additional filings in the Western District of Texas and N.D. Cal.
Notable cases. In December 2018 Sol IP filed parallel suits against AT&T Mobility, Sprint, and Verizon in E.D. Tex. over dozens of LTE and Wi-Fi patents; Ericsson and Nokia intervened, Ericsson filed a series of IPRs (IPR2020-00237 et seq.), and the cases were terminated in 2020. Later suits targeted Qualcomm (W.D. Tex., 2021), Ford (E.D. Tex., 2022, LTE-connected vehicles), and VinFast (C.D. Cal., 2024, not in the tracked list above). Most recently, on August 28, 2026, Sol IP filed separate E.D. Tex. complaints against Honda Motor and Volkswagen AG asserting two ETRI-originated MIMO patents (US 9,900,067 and US 10,090,894) over in-vehicle Wi-Fi. Outside the U.S., Sol IP has sued BYD in Germany and at the UPC (settled in 2025) and AGCO in Munich in 2026.
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Sol IP filed suit on 2026-08-28 in E.D. Tex. against Honda, assigned to Judge Gilstrap, asserting US 9,900,067 B2 and US 10,090,894 B2. Accused technology is Wi-Fi/MIMO functionality in vehicles. Status open.
Sol IP filed suit on 2026-08-28 in E.D. Tex. against Volkswagen AG, assigned to Judge Gilstrap, asserting US 9,900,067 B2 and US 10,090,894 B2. Accused technology is Wi-Fi/MIMO functionality in vehicles. Status open.
Filed March 31, 2022 against Ford Motor Company in E.D. Tex. Marshall Division, with an amended complaint on April 22, 2022. It was dismissed without prejudice on September 21, 2022; the narrative notes a contradiction about whether US 10,090,894 was actually asserted in the Ford filing.
Patent infringement action asserting US 10,080,204 against Ford Motor Company. Dismissed (Dismissed - Other) on September 21, 2022.
Filed March 17, 2021 in W.D. Tex. before Judge Alan Albright. US 10,090,894 is listed among the asserted patents; the case was voluntarily dismissed on May 25, 2021.
Filed December 3, 2018 in E.D. Tex. Marshall Division and designated the consolidated lead case for Sol IP's December 2018 campaign. The consolidated action included Sol IP's suits against Sprint and Verizon, with Ericsson as intervenor, and the AT&T action was dismissed/closed in 2020.
Filed December 3, 2018 in E.D. Tex. Marshall Division and consolidated with Sol IP's AT&T lead case. The asserted-patent list for this docket includes US 10,090,894; the case was terminated on May 20, 2020 as dismissed - other.
Filed December 3, 2018 in E.D. Tex. Marshall Division and consolidated with Sol IP's AT&T lead case. The asserted-patent list for this docket includes US 10,090,894; the case was terminated on May 20, 2020 as dismissed - other.
Lead case in the Dec. 3, 2018 Sol IP E.D. Tex. campaign, filed in Marshall before Judge Schroeder and Magistrate Judge Payne. The consolidated caption named AT&T, Cellco/Verizon, and Sprint entities as defendants, with Ericsson and Nokia intervening; the campaign asserted 27 patents, including US 9,900,067. Closed on 2020-05-20; disposition not stated.
One of three Dec. 3, 2018 Sol IP cases in E.D. Tex. Marshall against Sprint entities. It was consolidated into lead case 2:18-cv-00526 and closed with the lead case; the campaign included US 9,900,067.
Third Dec. 3, 2018 Sol IP case in E.D. Tex. Marshall; the defendant is not identified in the narrative. It was consolidated into lead case 2:18-cv-00526 and closed with it; the campaign included US 9,900,067.
Consolidated patent infringement action asserting US 10,080,204 against AT&T Mobility, Sprint entities, and Verizon Wireless. Consolidated with 2:18-cv-00527-RWS-RSP (Sprint) and 2:18-cv-00528-RWS-RSP (Verizon); Ericsson Inc. and Nokia of America Corporation intervened. Dismissed (Dismissed - Other) on May 20, 2020.
Case surfaced on the Google Patents litigation panel for US 9,900,067 in N.D. Cal., docket 5:20-cv-00399. The narrative could not confirm the defendant, patents-in-suit, or status, so it is unverified.