This page is the campaign hub for Vicor's vertical power-delivery fight. Vicor says competitors and supply-chain partners are using patented ways to feed high-current chips (CPUs, GPUs, and similar loads) from power converters stacked close to the silicon. The district cases seek damages and injunctions in Texas. The ITC case seeks to stop imports of accused systems and components.
Public filings summarized
| Forum | Case / investigation | Filing summarized | Next watch |
|---|---|---|---|
| W.D. Tex. Midland | Vicor v. Monolithic Power Systems et al., No. 7:26-cv-00364 (Judge Counts) | Filed September 8, 2026 on U.S. Patent 10,903,734. | Watch answers and early motions in Midland. |
| W.D. Tex. Midland | Vicor v. Flex Ltd., No. 7:26-cv-00365 | Filed September 8, 2026 companion suit on the same '734 patent. | Watch answers and early motions in the companion Midland case. |
| E.D. Tex. | Vicor v. Delta Electronics et al., No. 2:26-cv-00796 (Judge Schroeder) | Filed September 8, 2026 multi-defendant suit attaching the '734 patent (Foxconn/Hon Hai, Infineon, Luxshare, Quanta, Ingrasys, and Celestica entities among named defendants). | Watch answers and early motions in East Texas. |
| ITC 337 | Inv. No. 337-TA-1526 (DN 3936), Certain Vertical Power Delivery Systems, Components Thereof, and Computing Systems Containing the Same | Complaint filed September 9, 2026 and supplemented September 10; receipt notice September 14. Commission ordered institution October 9, 2026; published October 14, 2026, at 91 Fed. Reg. 65254 (FR Doc. 2026-20993), instituting the investigation under 19 CFR 210.10(b)(1) on claims 1-8, 11-14, 18-26, 40-56, 65-71, 80, 81, 83, 84, 90-93, and 95 of the '734 patent. | Watch for the presiding judge, the target date, responses, and any section 1659 stay requests in Texas. |
What patent is in play in district court
The East Texas complaint attaches "Exhibit 1 - '734 Patent." Public patent records identify Vicor's U.S. Patent 10,903,734, titled "Delivering power to semiconductor loads," as that '734 patent. Claim 1, one of the claims in the ITC investigation, covers a method of powering a semiconductor device by stacking a multi-cell power conversion module on an interconnection module that translates the converters' output terminal pattern to the different spacing of the device's power input terminals.
ITC Investigation 337-TA-1526
The September 14 receipt notice recorded Vicor's September 9 complaint under DN 3936. On October 9, 2026, the Commission ordered that Investigation No. 337-TA-1526 be instituted to determine whether there is a violation of section 337(a)(1)(B) by reason of infringement of one or more of claims 1-8, 11-14, 18-26, 40-56, 65-71, 80, 81, 83, 84, 90-93, and 95 of the '734 patent; under 19 CFR 210.10(b)(1) the investigation was instituted on Federal Register publication on October 14, 2026, at 91 Fed. Reg. 65254 (FR Doc. 2026-20993). The notice names 20 respondents: Delta Electronics, Inc.; Delta Electronics (Americas) Ltd.; DET Logistics (USA) Corporation; Infineon Technologies AG; Luxshare Precision Industry Co., Ltd.; Dongguan Luxshare Technology Co., Ltd. a/k/a Luxshare-Tech; Monolithic Power Systems, Inc.; Chengdu Monolithic Power Systems Co., Ltd.; MPS International (Shanghai) Ltd.; Flex Ltd.; Celestica Inc.; Quanta Computer Inc.; Quanta Cloud Technology Inc.; Quanta Cloud Technology USA LLC; Quanta Computer USA Inc.; Hon Hai Precision Industry Co. Ltd. (d/b/a Foxconn); Foxconn Industrial Internet Co. Ltd.; FII USA Inc. (a/k/a Foxconn Industrial Internet USA Inc.); Ingrasys Technology Inc.; and Ingrasys Technology USA Inc. Vicor requests a limited exclusion order, cease and desist orders, and, according to the September 14 receipt notice, a bond during the 60-day Presidential review period under 19 U.S.C. 1337(j). The Office of Unfair Import Investigations will not participate, and the Commission said it is interested in a thorough domestic industry record under section 337(a)(3)(A), (B), and (C), including the extent to which Vicor relies on third-party expenditures and on expenditures made outside the United States. See the separate page on the institution notice.
What it means
Vicor is running a dual-track campaign: damages and injunction pressure in Texas courts, and import-blocking pressure at the ITC against overlapping power-delivery and computing supply-chain respondents. That pattern matches other recent AI and datacenter hardware fights. Nothing in the district dockets or the FR receipt decides who wins on infringement or validity.
What to watch next for the campaign
Watch for the presiding judge's designation and target date in 337-TA-1526, the respondents' responses, district court answers and early motions, and any requests to stay the Texas cases under 28 U.S.C. 1659.