1. What Itc Section 337 Covers and Who Has Standing to File
Section 337 jurisdiction extends to any unfair act in the importation of articles, but the most frequently asserted grounds are patent infringement, trade secret misappropriation, and trademark infringement, each of which follows a distinct legal framework within the ITC proceeding.
Patent infringement is the dominant Section 337 theory. The complainant must hold a valid U.S. .atent, show that articles imported into the United States infringe at least one claim of that patent, and satisfy the domestic industry requirement. Utility patents, design patents, and plant patents each support a Section 337 complaint, and the infringement analysis follows the same claim construction methodology used in federal district court, applied by an Administrative Law Judge rather than an Article III judge.
Trade secret misappropriation under Section 337 is available when a foreign party misappropriated a trade secret and is now importing articles that embody that misappropriation. The Defend Trade Secrets Act of 2016 confirmed that trade secret misappropriation constitutes an unfair act under Section 337, making the ITC a viable forum for companies whose trade secrets have been stolen abroad and are now embedded in competing products entering the U.S. .arket.
What the Domestic Industry Requirement Demands from Complainants
The domestic industry requirement is the threshold showing that distinguishes Section 337 from ordinary patent infringement litigation and prevents foreign patent holders from using the ITC purely as a litigation weapon without any U.S. .usiness stake.
The domestic industry requirement has two components. The technical prong requires that the complainant's own domestic articles practice the asserted intellectual property right, meaning they are covered by the patent claims, embody the trade secret, or bear the asserted trademark. The economic prong requires that significant investment in plant and equipment, labor and capital, or exploitation of the intellectual property exist in the United States. The economic prong can be satisfied by licensing activities alone in patent cases, which has allowed patent licensing entities without manufacturing operations to use the ITC as an enforcement forum.
Establishing the domestic industry is one of the most important strategic decisions in preparing a Section 337 complaint, because a finding of no domestic industry terminates the investigation regardless of how clearly the respondent is infringing. An attorney who handles patent infringement litigation and ITC proceedings can evaluate which U.S. activities satisfy the economic prong and structure the complaint's domestic industry proof accordingly.
| Ground | Statute | Domestic Industry Required | Injury Required |
|---|---|---|---|
| Patent infringement | 19 U.S.C. § 1337(a)(1)(B) | Yes, technical and economic prong | No |
| Trade secret misappropriation | 19 U.S.C. § 1337(a)(1)(A) | Yes | No |
| Trademark infringement | 19 U.S.C. § 1337(a)(1)(C) | Yes | No |
| Non-IP unfair trade practices | 19 U.S.C. § 1337(a)(1)(A) | Yes | Yes, injury to domestic industry |
2. How an Itc Section 337 Investigation Proceeds from Complaint to Final Determination
An ITC Section 337 investigation moves on a compressed schedule set by statute and enforced by the Commission, and the speed that makes it attractive to complainants is the same speed that puts respondents under immediate operational pressure.
The ITC must determine whether to institute an investigation within 30 days of receiving a complaint. Once instituted, the investigation is assigned to an Administrative Law Judge who sets a target date for the final determination, typically 12 to 16 months from institution. Discovery, claim construction, expert reports, depositions, and the evidentiary hearing before the ALJ all occur within that compressed window under the ITC's Rules of Practice and Procedure at 19 C.F.R. Part 210.
The ALJ issues an Initial Determination on both violation and remedy, which the full Commission then reviews on a de novo basis. The Commission can adopt, modify, or reverse the ALJ's Initial Determination and issues its own Final Determination. The Final Determination is subject to a 60-day Presidential review period during which the President can disapprove any remedy on policy grounds.
What Respondents Must Do in the First 30 Days after a Complaint Is Filed
The 30-day period between complaint filing and institution is the respondent's only opportunity to act before the formal investigation timeline begins, and the decisions made in that window shape the entire defense strategy.
During the pre-institution period, respondents should conduct a rapid infringement analysis to evaluate whether the asserted claims actually read on the accused products, identify all prior art and invalidity arguments available for each asserted claim, assess whether the complainant's domestic industry allegations are factually supportable, and evaluate whether any design-around options exist that could remove future products from the investigation's scope. A respondent that reaches out to the complainant during this period and proposes a licensing resolution may avoid institution entirely, though the complainant has no obligation to negotiate.
Once the investigation is instituted, the respondent must respond to the complaint within 20 days and immediately implement a document preservation litigation hold covering all materials related to the accused products. Failure to preserve relevant documents creates sanctions risk in an investigation where the ALJ controls the schedule and is not receptive to delays caused by respondent unpreparedness. An attorney who handles intellectual property litigation and Section 337 defense matters can conduct the initial infringement and invalidity analysis within the pre-institution window and position the defense before the formal clock starts.
The 60-day Presidential review period that follows the Commission's Final Determination is the last opportunity for policy-based intervention before an exclusion order takes effect. The President can disapprove a remedy finding that the remedy is contrary to U.S. .olicy interests, including situations where the excluded products are critical to public health, national security, or a sector where alternative domestic supply does not exist. Presidential disapproval of ITC remedies is rare but has occurred in high-profile standard-essential patent cases involving consumer electronics.
3. What Remedies an Itc Section 337 Final Determination Can Impose
The ITC's remedial authority is limited to exclusion orders and cease and desist orders. It cannot award damages, and the absence of a damages remedy is both the proceeding's greatest limitation for complainants and its most powerful characteristic.
A Limited Exclusion Order directs Customs to exclude articles manufactured by or for the named respondents from entry into the United States. A General Exclusion Order, which is more difficult to obtain, excludes all articles of the same type from entry regardless of their manufacturer, providing protection against unknown future infringers who were not parties to the investigation. A General Exclusion Order requires the complainant to show that a Limited Exclusion Order would be inadequate to prevent circumvention of the remedy, typically because the infringement is widespread among unknown foreign manufacturers.
A Temporary Exclusion Order, sometimes called a temporary relief order, can be issued early in an investigation when the complainant demonstrates that immediate and substantial harm will result from continuing imports during the pendency of the full investigation. Temporary exclusion orders require a stronger showing than the final determination standard but can provide emergency relief within months of filing.
How Parallel District Court Litigation Interacts with Itc Proceedings
Complainants who file a Section 337 complaint typically file a parallel patent infringement suit in federal district court simultaneously, seeking damages in court while pursuing the import ban through the ITC.
The ITC proceeding and the district court litigation involve the same patents and the same accused products, but they proceed independently on different timelines with different decision-makers. A finding of invalidity in district court does not automatically terminate the ITC investigation, and the ITC is not bound by district court claim construction rulings, though both tribunals apply the same Markman analysis. The Federal Circuit hears appeals from both forums and is the ultimate arbiter of patent validity and claim construction.
District court proceedings involving the same patents are typically stayed under 28 U.S.C. § 1659 at the respondent's request until the ITC issues its Final Determination, which preserves the respondent's right to adjudicate validity in court while the ITC investigation is pending. The stay does not eliminate the district court case. It defers it, which means a respondent who prevails at the ITC still faces the damage exposure in district court once the stay is lifted. An attorney who handles trade secret misappropriation and ITC parallel proceedings can coordinate the ITC defense with the district court strategy to maximize the use of validity arguments across both forums.
Standard-essential patent holders who assert their patents in ITC Section 337 proceedings face a heightened remedial barrier because the Commission applies an enhanced public interest analysis before issuing exclusion orders on SEPs that are subject to FRAND licensing commitments. The Commission has found that issuing an exclusion order on a FRAND-committed SEP may conflict with the public interest when the complainant refused to license on reasonable terms. SEP holders using the ITC must demonstrate that the respondent was unwilling to accept a FRAND license before the Commission will grant exclusion.
4. Frequently Asked Questions about Itc Section 337
ITC Section 337 investigations produce urgent questions from companies that just received a complaint and companies that are evaluating whether to file one. The questions that define the decision in both situations are addressed directly here.
What Is Itc Section 337 and What Makes It Different from Patent Litigation in District Court?
ITC Section 337 is an administrative trade proceeding before the U.S. International Trade Commission under 19 U.S.C. § 1337 that allows U.S. .ntellectual property holders to seek exclusion of infringing imports from the United States. The critical differences from district court patent litigation are: the ITC cannot award damages, only exclusion orders and cease and desist orders; the timeline is 12 to 16 months rather than four to six years; there is no jury; and the proceeding is conducted before an Administrative Law Judge rather than an Article III judge. These differences make the ITC attractive for stopping imports quickly but less useful for monetizing infringement through damages.
What Is the Domestic Industry Requirement and Who Must Satisfy It?
Every Section 337 complainant must satisfy the domestic industry requirement, which has a technical prong showing that the complainant's own U.S. .roducts practice the asserted intellectual property, and an economic prong showing significant U.S. .nvestment in plant and equipment, labor and capital, or exploitation of the intellectual property. The economic prong can be satisfied by substantial licensing activities in the United States without any manufacturing presence, making the ITC accessible to patent licensing entities. Failure to satisfy either prong results in termination of the investigation regardless of whether infringement is proven.
How Long Does an Itc Section 337 Investigation Take?
The ITC sets a target date for the Final Determination at institution, typically 12 to 16 months from the date the investigation is instituted. This timeline is enforced strictly. Discovery, expert reports, claim construction briefing, depositions, and the evidentiary hearing before the ALJ all occur within the target date schedule. The ALJ issues an Initial Determination, the Commission reviews it and issues a Final Determination, and then a 60-day Presidential review period follows before the remedy takes effect.
What Is a General Exclusion Order and When Can One Be Obtained?
A General Exclusion Order bans all imports of the accused product type regardless of the manufacturer, including foreign manufacturers who were not parties to the investigation. It is significantly more difficult to obtain than a Limited Exclusion Order, which covers only named respondents. The Commission grants a General Exclusion Order when the complainant demonstrates that a Limited Exclusion Order would be inadequate to prevent circumvention of the remedy, typically because infringement is widespread among multiple foreign manufacturers, the respondents lack established distribution channels making them easy to identify, or future circumvention by new entrants is likely.
Can a Respondent Have the Itc Investigation Stayed While the District Court Case Proceeds?
No, but the reverse is available. Under 28 U.S.C. § 1659, a respondent in an ITC Section 337 investigation can obtain a stay of the parallel district court litigation involving the same patents until the ITC issues its Final Determination. This allows the respondent to focus resources on the ITC proceeding without simultaneously litigating the same patents in district court. The district court stay does not eliminate the damages claim. It defers the district court case, which resumes after the ITC Final Determination and Presidential review period are complete.
What Happens after the Itc Issues an Exclusion Order?
After the ITC issues a Final Determination including an exclusion order, the order is submitted to U.S. Customs and Border Protection for enforcement at all U.S. .orts of entry. Customs officers examine incoming shipments and detain products that fall within the scope of the exclusion order. The respondent can apply to the ITC for a ruling that a modified or redesigned product is outside the scope of the order. Appeals of the Commission's Final Determination are filed in the U.S. Court of Appeals for the Federal Circuit within 60 days of the expiration of the Presidential review period. An attorney who handles import and trade compliance and ITC appeals matters can evaluate whether the exclusion order scope covers the specific products at issue and whether a design-around or Federal Circuit appeal is the more viable path.
27 May, 2026
