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Section 337 investigation

Also called Section 337, ITC investigation, USITC Section 337 investigation, unfair import investigation, 19 U.S.C. 1337

Published by Patsnap Team Updated 8 sources
Definition

Section 337 investigation is an unfair import investigation conducted by the US International Trade Commission (USITC) under Section 337 of the Tariff Act of 1930, codified at 19 U.S.C. 13373,6. Such investigations most often involve claims of intellectual property infringement by imported goods, and the primary remedy is an exclusion order that directs Customs to stop infringing imports from entering the United States3.

For patents, the statute makes unlawful the importation, the sale for importation, or the sale within the United States after importation of articles that infringe a valid and enforceable US patent or are made by a process covered by the claims of one1. That ground applies only if an industry in the United States relating to the articles protected by the patent exists or is in the process of being established1. This page covers US law. See Patent infringement and Patent litigation.

Used byComplainants who allege that imported goods infringe US intellectual property rights, and the importers and other respondents named in the complaint3,5
Comes upWhen allegedly infringing products are imported into the United States and the complainant wants them kept out at the border3
Governed by19 U.S.C. 1337 and the USITC rules in 19 CFR part 2101,4,5
Not to confuse withA district court patent case; a respondent in both can ask the court to stay the civil action on the same issues6
01

What the statute covers

  • Patents (Section 337(a)(1)(B)). The importation into the United States, the sale for importation, or the sale within the United States after importation by the owner, importer or consignee of articles that infringe a valid and enforceable US patent, or that are made, produced, processed or mined under, or by means of, a process covered by the claims of a valid and enforceable US patent1.
  • Other registered rights (Section 337(a)(1)(B) to (E)). The same acts for articles that infringe a valid and enforceable US copyright registered under title 17 or trademark registered under the Trademark Act of 1946, a registered mask work, or a design protected under chapter 13 of title 17 (vessel hull and deck designs)1,2.
  • Unfair methods and acts (Section 337(a)(1)(A)). Unfair methods of competition and unfair acts in the importation of other articles, or in their sale by the owner, importer or consignee, the threat or effect of which is to destroy or substantially injure a US industry, prevent the establishment of such an industry, or restrain or monopolize trade and commerce in the United States1.

The USITC says both utility and design patents, as well as registered and common law trademarks, may be asserted, and that other forms of unfair competition involving imported products, such as misappropriation of trade secrets, may also be asserted3. See Design patent.

02

The domestic industry requirement

For patent, copyright, trademark, mask work and design claims, the statute applies only if an industry in the United States, relating to the articles protected by the right concerned, exists or is in the process of being established (Section 337(a)(2))1. An industry is considered to exist if there is in the United States, with respect to the articles protected by the patent or other right, significant investment in plant and equipment; significant employment of labor or capital; or substantial investment in its exploitation, including engineering, research and development, or licensing (Section 337(a)(3))1.

The USITC rule on complaints requires a statement as to whether an alleged domestic industry exists or is in the process of being established. For an existing industry the complaint must give a detailed description including facts showing significant or substantial investment and employment, and the relevant operations of any licensees. For an industry in the process of being established it must give facts showing that the complainant is actively engaged in the steps leading to exploitation of its intellectual property rights and that there is a significant likelihood that an industry will be established in the future (19 CFR 210.12(a)(6))5.

03

How an investigation runs

  1. ComplaintThe Commission investigates any alleged violation on complaint under oath or on its own initiative (Section 337(b)(1))1. Under the USITC rule the complaint must be under oath, state the facts constituting the alleged unfair acts, describe specific instances of unlawful importation or sale with Harmonized Tariff Schedule item numbers, and name each person alleged to be violating the section (19 CFR 210.12(a))5.
  2. InstitutionThe Commission determines whether the complaint is properly filed and whether an investigation should be instituted within 30 days after the complaint is filed, unless one of the exceptions in the rule applies, such as exceptional circumstances (19 CFR 210.10(a)(1))4. On commencing an investigation, the Commission publishes notice in the Federal Register and, within 45 days after initiation, sets a target date for its final determination (Section 337(b)(1))1.
  3. Trial and determinationThe USITC says its investigations include trial proceedings before administrative law judges and review by the Commission3. All legal and equitable defenses may be presented, and the Commission may terminate an investigation in whole or in part by a consent order or on the basis of an agreement between the private parties, including an agreement to arbitrate (Section 337(c))1.
  4. Presidential reviewA violation determination is published in the Federal Register and transmitted to the President with the record (Section 337(j)(1)). If the President, for policy reasons, disapproves it and notifies the Commission before the close of the 60-day period beginning on the day after he receives it, the determination and the action taken have no force or effect (Section 337(j)(2)). Otherwise the determination becomes final at the end of that period, or earlier if the President approves (Section 337(j)(4)). Until it is final, excluded articles are entitled to entry under a bond set in an amount the Commission determines sufficient to protect the complainant from any injury (Section 337(j)(3))1.
  5. AppealAny person adversely affected by a final determination under subsection (d), (e), (f) or (g) may appeal to the US Court of Appeals for the Federal Circuit within 60 days after the determination becomes final (Section 337(c))1.
04

Remedies: exclusion orders and cease and desist orders

RemedyWhat the statute provides
Exclusion orderIf the Commission determines that there is a violation, it directs that the articles concerned, imported by any person violating the section, be excluded from entry, unless it finds that they should not be excluded after considering the effect on public health and welfare, competitive conditions in the US economy, the production of like or directly competitive articles in the United States and US consumers (Section 337(d)(1)). Customs refuses entry on notice from the Commission1,3. The order is limited to persons determined to be violating unless a general exclusion is necessary to prevent circumvention of an order limited to named persons, or there is a pattern of violation and it is difficult to identify the source of infringing products (Section 337(d)(2))1.
Cease and desist orderIn addition to or in lieu of exclusion, the Commission may order a person violating, or believed to be violating, to cease and desist from the unfair acts, subject to the same public-interest considerations (Section 337(f)(1))1. A person who violates a final order forfeits a civil penalty for each day an importation or sale occurs in violation of it, of not more than the greater of $100,000 or twice the domestic value of the articles entered or sold that day (Section 337(f)(2))1.
Temporary reliefDuring an investigation, if there is reason to believe there is a violation, the Commission may direct exclusion, with the articles entitled to entry under bond. A complainant may petition for it, and the Commission must decide the petition by the 90th day after notice of the investigation is published, extendable by 60 days in a case it designates as more complicated (Section 337(e))1. Preliminary relief may be granted to the same extent as preliminary injunctions and temporary restraining orders under the Federal Rules of Civil Procedure (Section 337(e)(3))1.
DefaultIf a respondent served with the complaint fails to respond or appear and fails to show good cause, and the complainant seeks relief limited to that person, the Commission presumes the facts alleged to be true and, on request, issues an exclusion or cease and desist order limited to that person, subject to the public-interest findings (Section 337(g)(1)). A general exclusion order may also issue where no person appears to contest the investigation, the violation is established by substantial, reliable and probative evidence, and the requirements of Section 337(d)(2) are met (Section 337(g)(2))1.

An exclusion order or cease and desist order continues in effect until the Commission finds that the conditions that led to it no longer exist (Section 337(k)(1))1. Orders in patent, copyright, mask work and design cases do not apply to articles imported by and for the use of the United States, or imported for it with the authorization or consent of the Government, and the owner is then entitled to reasonable and entire compensation in the Court of Federal Claims (Section 337(l))1. See also Compulsory license.

05

Section 337 and district court cases

ForumWho decidesWhat it can order
Section 337 investigationAdministrative law judges and the Commission3An exclusion order and cease and desist orders, with temporary relief in some cases1,3
District court actionA United States district courtInjunctions in accordance with the principles of equity (35 U.S.C. 283)7, and damages adequate to compensate for the infringement, in no event less than a reasonable royalty (35 U.S.C. 284)8

A respondent in a Commission proceeding that is also a party to a civil action with the same parties can ask the district court to stay proceedings on any claim that involves the same issues. The district court shall grant the stay until the Commission's determination becomes final, if the request is made within 30 days after the party is named as a respondent or 30 days after the district court action is filed, whichever is later (28 U.S.C. 1659(a)). After the stay is dissolved, the Commission record is transmitted to the district court and is admissible, subject to a protective order and the evidence rules (28 U.S.C. 1659(b))6. A respondent may also raise a counterclaim in the Commission, and must then file a notice of removal of it with a district court (Section 337(c))1.

06

Questions people ask

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What is the domestic industry requirement in a Section 337 case?

For patent, copyright, trademark, mask work and design claims, an industry in the United States relating to the articles protected by the right must exist or be in the process of being established (Section 337(a)(2)). It is considered to exist if there is significant investment in plant and equipment, significant employment of labor or capital, or substantial investment in exploitation, including engineering, research and development, or licensing (Section 337(a)(3))1.

What can the USITC order?

The primary remedy is an exclusion order that directs Customs to stop infringing imports from entering the United States, and the Commission may also issue cease and desist orders against named importers and others engaged in the unfair acts3. The statute also provides for temporary exclusion during an investigation, default orders and civil penalties for violating a final order (Section 337(d) to (g))1.

Can the President overturn a Section 337 determination?

Yes, for policy reasons. If the President disapproves a determination and notifies the Commission before the close of the 60-day period that begins the day after he receives it, the determination and the action taken have no force or effect (Section 337(j)(2)). If he does not disapprove within that period, the determination becomes final1. By a Presidential Memorandum of July 21, 2005 (70 F.R. 43251), these functions have been assigned to the United States Trade Representative1.

How long does a Section 337 investigation take?

The statute sets no fixed length. The Commission must conclude the investigation at the earliest practicable time after notice is published, and within 45 days after initiation it must set a target date for its final determination (Section 337(b)(1))1. The decision whether to institute an investigation is due within 30 days after the complaint is filed, subject to exceptions in the rule4.

07

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PublishedPatsnap Team
Updated 27 October 2026
Sources
  1. 19 U.S. Code § 1337: Unfair practices in import trade. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  2. 17 U.S. Code § 1301: Designs protected. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  3. About Section 337. United States International Trade Commission (USITC). Accessed 22 October 2026.
  4. 19 CFR 210.10: Institution of investigation. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  5. 19 CFR 210.12: Contents of the complaint. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  6. 28 U.S. Code § 1659: Stay of certain actions pending disposition of related proceedings before the United States International Trade Commission. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  7. 35 U.S. Code § 283: Injunction. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
  8. 35 U.S. Code § 284: Damages. Legal Information Institute, Cornell Law School. Accessed 22 October 2026.
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