U.S. International Trade Commission Receives Complaint on Power Converters and Circuit Systems

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On January 14, 2026, the U.S. International Trade Commission (USITC) announced the receipt of a new complaint concerning “Certain Power Converters, Circuit Board Assemblies, and Computing Systems Containing the Same.” The complaint is officially logged under Docket Number 3874.

The complaint was filed by Vicor Corporation. It alleges violations of section 337 of the Tariff Act of 1930 (19 U.S.C. 1337). The complaint covers the importation, sale for importation, and sale after importation of specific power converters, circuit board assemblies, and computing systems that contain those parts.

Respondents named in the complaint include:

  • Delta Electronics, Inc. (Taiwan)
  • Delta Electronics (Americas) Ltd. (Fremont, CA)
  • DET Logistics (USA) Corporation (Fremont, CA)
  • Luxshare Precision Industry Co., Ltd. (China)
  • Dongguan Luxshare Technology Co., Ltd. a/k/a Luxshare-Tech (China)
  • Shanghai Peiyuan Electronics Co., Ltd. d/b/a MetaPWR Electronics Co., Ltd. and Shanghai MetaPWR Electronics Co., Ltd. (China)
  • Monolithic Power Systems, Inc. (Kirkland, Washington)
  • Chengdu Monolithic Power Systems Co., Ltd. (China)
  • MPS International (Shanghai) Ltd. (China)
  • Wistron Corporation (Taiwan)
  • Wiwynn Corporation (Taiwan)
  • Quanta Computer Inc. (Taiwan)
  • Quanta Cloud Technology Inc. (Taiwan)
  • Quanta Cloud Technology USA LLC (San Jose, CA)
  • Quanta Computer USA Inc. (Fremont, CA)

Vicor Corporation requests that the Commission issue a limited exclusion order and cease and desist orders. The company also seeks a bond on respondents’ allegedly infringing products during the 60-day Presidential review period as provided by 19 U.S.C. 1337(j).

The Commission now seeks public comments about any public interest concerns the complaint may raise. These comments should discuss whether the requested relief would affect public health and welfare, competitive conditions in the U.S. economy, the production of like or directly competitive articles in the U.S., or U.S. consumers.

The Commission especially asks for comments on:

  • How the products are used in the United States.
  • Health, safety, or welfare concerns in the U.S. related to the orders requested.
  • Whether similar products are made in the U.S. and could replace the subject articles if excluded.
  • The ability for Vicor, its licensees, or third parties to fill the market if the alleged items are excluded or ordered to cease and desist.
  • The impacts of the requested orders on U.S. consumers.

All written submissions about public interest must be filed no later than close of business, eight calendar days after this notice’s publication in the Federal Register. There will be more chances for the public to comment after any final initial determination in this investigation. All submissions and replies must be no more than five pages, including attachments.

Submissions must be filed electronically through the Commission’s EDIS system at https://edis.usitc.gov. No paper or in-person filings will be accepted at this time.

Requests for confidential treatment must be addressed to the Secretary to the Commission and must include a statement explaining why confidential treatment should be granted.

All contract personnel must sign nondisclosure agreements. Nonconfidential written submissions will be available to view at the Office of the Secretary and on EDIS at https://edis.usitc.gov.

This notice is issued under the authority of section 337 of the Tariff Act of 1930, as amended (19 U.S.C. 1337), and sections 201.10 and 210.8(c) of the Commission’s Rules of Practice and Procedure (19 CFR 201.10, 210.8(c)).

The Secretary to the Commission for this action is Lisa Barton. The notice was issued on January 12, 2026.

For more information, visit https://www.usitc.gov or the EDIS system at https://edis.usitc.gov.


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