337: magnet wire 1527 instituted; shrimp DN 3945

Two USITC Section 337 notices issued October 29, 2026 and scheduled for publication in the Federal Register on November 3, 2026. The Commission institutes Investigation No. 337-TA-1527 on extrusion-coated magnet wire (FR Doc. 2026-22372). Separately, it receives a complaint on Certain Shrimp and Products Containing Same, DN 3945 (FR Doc. 2026-22378), and solicits public interest comments. Institution of 1527 is not an exclusion order; DN 3945 is complaint receipt only.

337-TA-1527 instituted on Essex magnet wire patents vs Wellascent. Shrimp DN 3945 received; public interest comments due eight calendar days after FR publication (by our count Nov 12, 2026 after Veterans Day).

Magnet wire: 337-TA-1527 instituted

Complaint filed September 29, 2026 by Essex Solutions Inc. and Essex Solutions USA LLC of Atlanta, Georgia; supplement October 13, 2026. The earlier complaint-stage notice was DN 3940 (Essex magnet wire 337 complaint vs Wellascent). Patents asserted: U.S. 8,847,075 (claims 1 and 3), 9,224,523 (claims 1-4), and 10,210,966 (claims 1-5). Accused products: "extrusion-coated magnet wire having an outer layer formed from an extruded thermoplastic resin."

Respondents: Wellascent Electronic (Ganzhou) Co., Ltd. of Ganzhou, China, and Wellascent Technologies USA LLC of Grand Prairie, Texas. Complainants seek a limited exclusion order and cease and desist orders. Instituted October 29, 2026 under 19 U.S.C. 1337 and 19 CFR 210.10. The Office of Unfair Import Investigations is not participating. The Commission asks the ALJ to develop the domestic industry record, including third-party and outside-U.S. expenditures. Responses due 20 days after service (19 CFR 210.13). The immediately prior institution number was 337-TA-1526 (Vicor vertical power delivery 337-TA-1526).

Shrimp: DN 3945 complaint received

Complaint and 210.8(b) submission filed October 28, 2026 on behalf of Versaggi Shrimp Corp. and W&W Dock LLP. The notice alleges Section 337 violations in the importation and sale of certain shrimp and products containing same; it does not state the legal theory, so do not treat this as a patent case from the notice alone. This is separate from AD orders on shrimp.

Proposed respondents: Nekkanti Sea Foods Ltd. (India); Eastern Fish Company (Teaneck, NJ); ALDI SÜD Dienstleistungs-SE & Co. oHG (Germany); ALDI Inc. (Batavia, IL); Koninklijke Ahold Delhaize N.V. (Netherlands); Ahold Delhaize USA (Quincy, MA); and Meijer, Inc. (Grand Rapids, MI). Complainants request a limited exclusion order, cease and desist orders, and a bond during the 60-day Presidential review period (19 U.S.C. 1337(j)). The Commission has not decided whether to institute.

Public interest comments: due by close of business eight calendar days after Federal Register publication, five-page limit, Docket No. 3945; replies three calendar days after the comment due date (19 CFR 201.14(a) last-day rules still apply). By our count, eight days after November 3 is November 11, 2026 (Veterans Day, a federal holiday), so the deadline would roll to the next business day, November 12, 2026, by our count. Confirm with the Commission.

Action items and customs note

• Magnet wire importers: watch 337-TA-1527 service and the 20-day response clock; track whether any later limited exclusion order issues.
• Shrimp supply chains named in DN 3945: calendar the public interest window and watch for an institution notice.
• Do not treat institution or complaint receipt as an exclusion order. Confirm any entry holds with counsel and CBP once a remedy, if any, issues.

A Section 337 exclusion order, if any, affects whether goods can enter. That is separate from duty recovery. Ordinary customs duties on qualifying entries can still be drawback-eligible when merchandise is exported or destroyed (or used to manufacture exported goods) and the claim otherwise qualifies (how to file a duty drawback claim).

This article is for general information and is not legal or tax advice. Drawback eligibility depends on your specific facts, and final refunds are determined by CBP at liquidation. Consult a licensed customs broker or attorney for your situation.