Counting, Not Adjectives: Lelo v. ITC and the Quantitative Economic Prong of Section 337

The Federal Circuit held that 'crucial' off-the-shelf components cannot prove a domestic industry; the economic prong of Section 337 demands a quantitative showing of real US investment.

Workers on a modern factory assembly line beside crates of stacked components
Calling a part 'crucial' does not make a domestic industry; the economic prong asks how much was actually invested in the United States. Shutterstock
Educational content, not legal advice. This article explains general legal concepts. It does not create an attorney–client relationship. For your specific situation, consult a licensed attorney.

To win an exclusion order at the International Trade Commission, a patent owner must prove more than infringement; it must prove that a real “domestic industry” exists in the United States. In Lelo Inc. v. International Trade Commission, 786 F.3d 879 (Fed. Cir. 2015), decided May 11, 2015, the Federal Circuit drew a sharp line under what that requires: dollars and headcount, not adjectives. The ITC had found a domestic industry largely because a handful of components in the patented product were “crucial.” The appellate court vacated that finding, holding that the economic prong of Section 337 demands a quantitative analysis of genuine domestic investment and employment, and that qualitative labels cannot compensate for figures that are insignificant on their face.

At a glance

  • Case: Lelo Inc., Leloi AB v. International Trade Commission, No. 2014-1452, 786 F.3d 879 (Fed. Cir. May 11, 2015); Standard Innovation (US) Corp. and Standard Innovation Corporation, intervenors.
  • Court: U.S. Court of Appeals for the Federal Circuit; opinion by Judge Reyna, joined by Judges Moore and Clevenger.
  • Posture: Appeal from a final ITC determination (Investigation No. 337-TA-823) finding a violation of Section 337 and the existence of a domestic industry under the economic prong.
  • Holding: The economic prong of the domestic industry requirement, 19 U.S.C. § 1337(a)(3), requires a quantitative analysis; qualitative factors cannot, standing alone, establish a “significant investment in plant and equipment” or “significant employment of labor or capital” where the quantitative data show the investment is insignificant.
  • Significance: Reset ITC practice on the economic prong, forcing complainants to anchor domestic-industry proof in actual US expenditures rather than narratives about the importance of components.

The dispute and the patent

The case grew out of an ITC investigation brought by Standard Innovation, which makes the “We-Vibe” line of personal massagers and held U.S. Patent No. 7,931,605. Standard Innovation accused Lelo, a Swedish manufacturer, of importing competing kinesiotherapy devices that infringed its patent. To establish the required domestic industry under Section 337 of the Tariff Act of 1930, Standard Innovation pointed not to a US manufacturing plant of its own—its products were assembled abroad—but to its purchase of four components from suppliers in the United States. It argued those parts were “crucial” or “important” to the patented device, and that buying them domestically demonstrated a significant domestic investment.

The administrative law judge and the Commission accepted that theory. They reasoned that because the components were essential to the invention, even comparatively modest expenditures associated with them could satisfy the economic prong. That logic put the qualitative significance of the parts ahead of any dollar accounting, and it was precisely that approach the Federal Circuit rejected.

Section 337’s economic prong, by the numbers

Section 337(a)(3) recognizes a domestic industry where there is, “with respect to the articles protected by the patent,” (A) “significant investment in plant and equipment,” (B) “significant employment of labor or capital,” or (C) “substantial investment in [the patent’s] exploitation.” Each of subsections (A) and (B) turns on a word—“significant”—that the court read as inherently quantitative. “Significant” and “substantial,” Judge Reyna explained, refer to an “increase in quantity, or to a benchmark in numbers.” The statute therefore “requires a quantitative analysis in order to determine whether there is a ‘significant’ increase or attribution by virtue of the claimant’s asserted commercial activity.”

That framing reordered the inquiry. A complainant must first put real numbers on the table—what it spent, how many people it employed, the scale of its capital investment in the United States—and only then can qualitative context color the picture. The ITC had inverted the order, allowing the asserted importance of the components to do the work that the dollar figures could not. Because the record’s quantitative evidence showed insignificant domestic investment and employment, the qualitative “crucial component” theory could not save it.

Why purchasing components was not investing

The court’s treatment of the four US-sourced components is the opinion’s practical core. The suppliers, it found, were “neither contractors nor subcontractors”; they were retailers selling off-the-shelf parts available to anyone. Standard Innovation pointed to no evidence connecting the cost of those parts to any increase in domestic capital, labor, plant, or jobs. Buying an existing product from a US vendor, the court reasoned, is not the same as investing in a domestic industry built around the patent.

The distinction matters because it closes a tempting workaround. A foreign manufacturer that assembles abroad cannot manufacture a domestic industry simply by sourcing a few inputs stateside and then labeling them indispensable. Absent proof that the purchases drove genuine US investment or employment, the expenditures are just procurement. The Federal Circuit vacated the Commission’s domestic-industry finding and remanded, leaving Standard Innovation without the predicate it needed for an exclusion order.

Open questions

  • How much is “significant”? Lelo insists on a quantitative analysis but sets no numerical threshold, leaving the Commission to calibrate significance case by case and industry by industry.
  • Can context-specific qualitative factors still matter? The opinion allows qualitative considerations to inform the analysis but bars them from rescuing insignificant numbers; the boundary between informing and rescuing remains contested.
  • What proof links purchases to investment? The court faulted the absence of evidence tying component buys to US investment, but did not map exactly what showing would have sufficed for a complainant that assembles overseas.

Implications

  • Lead with the numbers. Complainants must build the domestic-industry case on documented US expenditures, employment, and capital before invoking the importance of any product feature.
  • Off-the-shelf buys rarely count. Purchasing components from US retailers, without more, will not establish a domestic industry; contractor or subcontractor relationships and traceable investment are far stronger.
  • Adjectives are not evidence. Describing a part as “crucial” or “essential” carries no weight where the dollar figures are insignificant; the economic prong is a counting exercise first.
  • Assembly location is not dispositive but matters. Firms that manufacture abroad face a steeper climb proving a domestic industry and should plan their proof, and perhaps their operations, accordingly.
  • ITC strategy shifted. After Lelo, administrative law judges have revisited prior findings and demanded rigorous quantitative records, raising the bar for Section 337 complainants.

Frequently asked questions

What did Lelo v. ITC change about the domestic industry requirement? It held that the economic prong of Section 337 requires a quantitative analysis of a complainant’s domestic investment and employment. Qualitative descriptions, like calling a component “crucial” or “important,” cannot by themselves satisfy the statute when the underlying dollar figures are insignificant.

Why didn’t buying US-made components count toward the domestic industry? Because the suppliers were ordinary retailers selling off-the-shelf parts, not contractors or subcontractors, and the complainant offered no evidence tying those purchases to any increase in US investment, plant, or jobs. Purchasing existing components is not the same as investing in a domestic industry.

Does a complainant still need to show qualitative importance after Lelo? Qualitative context can still inform the analysis, but it cannot rescue figures that are quantitatively insignificant. The Federal Circuit made clear the inquiry must begin with the numbers, and adjectives cannot substitute for them.

Authorities and sources

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Lidiia Levitska
About the Author

Lidiia Levitska

International Intellectual Property Attorney

Lidiia Levitska focuses on intellectual property dispute resolution, policy, and advisory work across international institutions and government bodies. From 2021 to 2025 she served at the World Intellectual Property Organization (WIPO), managing arbitration cases and overseeing compliance with the Uniform Domain-Name Dispute-Resolution Policy (UDRP), and earlier led IP policy research as a Senior Policy Officer at the American Chamber of Commerce in Ukraine. She holds an LL.M. in International Intellectual Property Law from Chicago-Kent College of Law and an M.A. in Information Technology Law from the University of Tartu, and was admitted to the Ukrainian Bar in 2019.

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