Vicor Corporation filed three patent infringement complaints on the same day. Two landed in the Western District of Texas, Midland Division, before Judge Walter David Counts III. One landed in the Eastern District of Texas before Judge Robert W. Schroeder III.
The three dockets
In Midland, Vicor Corporation v. Monolithic Power Systems, Inc., No. 7:26-cv-00364, names Monolithic Power Systems, Inc., Chengdu Monolithic Power Systems Co., Ltd., and MPS International (Shanghai) Ltd. The companion Midland case is Vicor Corporation v. Flex Ltd., No. 7:26-cv-00365.
In East Texas, Vicor Corporation v. Delta Electronics, Inc., No. 2:26-cv-00796, names Delta Electronics, Inc., Delta Electronics (Americas) Ltd., Foxconn / Hon Hai entities, Infineon Technologies AG, Luxshare entities, Quanta Computer Inc., Quanta Cloud Technology Inc., Ingrasys Technology Inc., and Celestica Inc.
What patent is in play
The East Texas complaint attaches "Exhibit 1 - '734 Patent" on the public CourtListener docket. Public patent records identify Vicor's U.S. Patent 10,903,734, titled "Delivering power to semiconductor loads," as that '734 patent. It covers vertical power delivery for high-current semiconductor loads such as CPUs, GPUs, and similar chips. The free Midland complaint PDFs were not readable for this write-up, so product-level claim charts are not repeated here.
What it means in plain terms
Vicor is pressing the same patent fight across module makers and a wider server and power supply chain. That kind of multi-defendant filing often aims at stopping or taxing power hardware used in AI and datacenter racks. Nothing on the free docket yet decides who wins.
What to watch next
Watch for answers or early motions in Midland and Marshall, and for whether the free RECAP copies of the Midland complaints list the same '734 patent and which products are accused. Also watch for any related ITC filing, which Vicor has used in earlier power fights.