Fifth Circuit Narrows FCA First-to-File Bar: “Related Actions” Require the Same Fraud Mechanism, Not Just the Same Statutory Overcharging Theory

Case: United States of America, ex rel, Maria Del Carmen Gamboa Ferguson, Individually v. Lockheed Martin Corporation, No. 24-10713

Court: United States Court of Appeals for the Fifth Circuit

Date: March 9, 2026

Disposition: Reversed dismissal under Rule 12(b)(1) and remanded

1. Introduction

This False Claims Act (“FCA”) qui tam appeal sits at the intersection of defense procurement pricing rules and the FCA’s gatekeeping “first-to-file” bar. Relator Maria Del Carmen Gamboa Ferguson—Lockheed Martin’s former Director of Internal Audit and Senior Manager for Subcontract Audit—alleged she uncovered fraud across multiple military aircraft programs (including the F-35 JSF, F-16, F-22, and C-130). Her theory centered on Lockheed’s alleged failure (and, as pleaded, willful refusal) to ensure its subcontractors’ “cost or pricing data” were accurate, leading Lockheed to submit inflated proposals and claims.

The district court dismissed for lack of subject-matter jurisdiction, holding the FCA’s first-to-file bar applied because a previously filed qui tam action by another relator, Girard, purportedly contained the “same essential elements” of fraud. The Fifth Circuit reversed, holding the two complaints alleged materially different fraud schemes: Girard alleged a bulk-discount overbilling scheme; Ferguson alleged subcontractor cost/labor inflation enabled by Lockheed’s systematic disregard of verification duties.

The core issue was one of granularity: when two FCA complaints involve the same defendant and overlapping regulatory frameworks (TINA/FAR), how precisely must the later-filed complaint match the earlier complaint’s factual “scheme” before it is jurisdictionally barred?

2. Summary of the Opinion

The Fifth Circuit held that the first-to-file bar does not apply where the later-filed complaint alleges a different mechanism for defrauding the Government, even if both complaints can be broadly described as “overcharging” and even if both implicate TINA and FAR obligations. The district court erred by comparing the complaints at too high a level of generality (i.e., “overcharging via TINA/FAR violations”) and by assuming an investigation of Girard’s bulk-discount allegations would naturally uncover Ferguson’s subcontractor-cost inflation allegations.

Accordingly, the court reversed the Rule 12(b)(1) dismissal and remanded for further proceedings; it expressly declined to conduct the fact-intensive Rule 12(b)(6) sufficiency analysis that the district court did not reach.

3. Analysis

3.1 Precedents Cited

A. Fifth Circuit anchors: “essential facts/material elements” and side-by-side comparison

  • U.S. ex rel. Branch Consultants v. Allstate Ins. Co., 560 F.3d 371 (5th Cir. 2009).
    Branch Consultants supplies the Fifth Circuit’s governing test: first-to-file applies if the later complaint alleges the “same material or essential elements of fraud” as a pending action. Branch also warns relators cannot evade the bar by adding “factual details or geographic locations.” In Ferguson, the panel treated Branch as controlling but distinguished it: Ferguson did not add more instances of the same wind-to-flood reallocation scheme; she alleged a different procurement-fraud mechanism.
  • United States v. Planned Parenthood of Hou., 570 F. App’x 386 (5th Cir. 2014) (per curiam).
    Planned Parenthood illustrates the “would an investigation uncover the same fraudulent activity?” framing. The court there found sufficiently similar billing fraud (altering patient records/improper coding) such that the earlier complaint put the Government on notice. Ferguson used it as a contrast: auditing Lockheed’s bulk purchasing/invoicing would not naturally lead to subcontractor labor-hour inflation hidden in different documentation.
  • U.S. ex rel. Smart v. Heath, 563 F. App’x 314 (5th Cir. 2014).
    Smart found the bar applicable where complaints alleged different statutes, but the Ferguson panel read Smart as functionally reflecting different fraud mechanisms (coding fraud vs. inducement/kickback-type conduct), supporting the proposition that “how” the fraud works matters.
  • U.S. ex rel. Branch Consultants v. Allstate Ins. Co. also informed the panel’s insistence that courts compare complaints “side-by-side,” echoed by other circuits and restated in: U.S. ex rel. Smart v. Heath and United States v. Planned Parenthood of Hou.

B. Sister-circuit “mechanism of fraud” cases used as persuasive guidance

  • U.S. ex rel. Heath v. AT & T, Inc., 791 F.3d 112 (D.C. Cir. 2015).
    Heath is central to the Fifth Circuit’s reasoning: two complaints may target “factually distinct types of frauds” even if both concern pricing rules. Heath distinguished affirmative misrepresentation from institutionalized disregard of a pricing requirement. The Ferguson panel found an even starker separation: bulk-discount misrepresentation versus systemic failure to verify subcontractor cost/labor data.
  • United States v. Millenium Lab'ys, Inc., 923 F.3d 240 (1st Cir. 2019).
    Millenium Laboratories reinforced that courts must not define fraud at an overly general level (e.g., “overbilling”). Instead, courts must examine the “actual mechanism (the ‘essential facts’) of the fraud.” This principle is the Fifth Circuit’s key move in rejecting the district court’s broad-brush “overcharging under TINA” equivalence.
  • United States ex rel. Hartpence v. Kinetic Concepts, Inc., 792 F.3d 1121 (9th Cir. 2015) (en banc).
    Hartpence supplied language the panel adopted: where the second relator provides information about a “different form of fraud,” the Government might not investigate beyond the first scheme. The Fifth Circuit used this to underscore that Ferguson’s allegations were not “piggyback” claims.

C. Cases distinguished because they involved the same scheme with added details

The panel catalogued multiple first-to-file cases where later complaints were barred because they merely expanded or echoed the earlier scheme:

  • United States ex rel. Carson v. Manor Care, 851 F.3d 293 (4th Cir. 2017) (different “modalities,” same overbilling scheme).
  • United States ex rel. Wilson v. Bristol-Myers Squibb, Inc., 750 F.3d 111 (1st Cir. 2014) (considerable overlap: same drugs and promotional mechanisms).
  • United States ex rel. Heineman-Guta v. Guidant Corp., 718 F.3d 28 (1st Cir. 2013) (later complaint “echoed” earlier alarm with more detail).
  • Cho on behalf of States v. Surgery Partners, Inc., 30 F.4th 1035 (11th Cir. 2022) (similar kickback programs; later added defendant).
  • U.S. ex rel. Wood v. Allergan, Inc., 899 F.3d 163 (2d Cir. 2018) (same free-kit inducement scheme).
  • Grynberg v. Koch Gateway Pipeline Co., 390 F.3d 1276 (10th Cir. 2004) (additional facts about the same mismeasurement scheme).
  • U.S. ex rel. Batiste v. SLM Corp., 659 F.3d 1204 (D.C. Cir. 2011) (corporation-wide forbearance scheme; investigation would equip Government nationwide).

D. Jurisdictional characterization flagged but not decided

  • Stein v. Kaiser Found. Health Plan, Inc., 115 F.4th 1244 (9th Cir. 2024) (en banc).
    Stein was cited to note a circuit split on whether the first-to-file rule is jurisdictional. The Fifth Circuit acknowledged the issue but declined to reach it. Practically, however, the court proceeded under its existing framework—treating first-to-file as supporting Rule 12(b)(1) dismissal—while holding it inapplicable on the merits.

E. Procedural review/affirmance authorities

  • Arena v. Graybar Elec. Co., 669 F.3d 214 (5th Cir. 2012) (plaintiff bears burden of establishing jurisdiction).
  • Morales-Garza v. Lorenzo-Giguere, 277 F. App’x 444 (5th Cir. 2008), citing Moncrief Oil Int'l Inc. v. OAO Gazprom, 481 F.3d 309 (5th Cir. 2007) (affirm on any ground supported by record).
  • Breaux v. Dilsaver, 253 F.3d 533 (5th Cir. 2001) (court need not affirm on alternative grounds).

3.2 Legal Reasoning

A. The court’s key move: separating “overcharging” from the “scheme”

The district court effectively treated “TINA/FAR violations resulting in inflated prices” as the operative “essential facts.” The Fifth Circuit rejected that level of abstraction. Its reasoning is that nearly any procurement-fraud case can be described as “overcharging,” and nearly any TINA case can be described as “inadequate cost or pricing data.” If that were sufficient, an initial TINA qui tam would risk barring later, genuinely distinct fraud allegations against the same contractor—an outcome inconsistent with the FCA’s dual aims of encouraging valuable whistleblowing and discouraging parasitism.

Instead, the panel required attention to the “mechanism or scheme”:

  • Girard’s scheme: Lockheed buys in bulk at discounted prices but bills the Government as if it paid the higher per-unit price.
  • Ferguson’s scheme: Lockheed knowingly incorporates subcontractors’ inflated labor/cost data and systematically ignores verification duties, allowing inflated proposals across multiple programs.

Because those mechanisms differ, the panel concluded the later action was not “based on the facts underlying” the earlier one in any meaningful sense.

B. “Would an investigation uncover it?”—document trail and investigative scope

The court emphasized that first-to-file similarity is tested by asking whether investigation of the first complaint would uncover the second complaint’s fraud. Here, the panel found the investigative pathways materially diverged: Girard would prompt review of purchase orders, invoices, lot-buy pricing, and margin/markup behavior. Ferguson would require digging into subcontractor audit scope restrictions, labor-hour reporting, overhead pool allocations, and cost/pricing memoranda. The panel found it plausible (indeed likely) that competent investigation of the bulk-discount scheme would uncover more bulk-discount abuse, but not necessarily an independent subcontractor labor inflation scheme.

C. Statutory/regulatory overlap is not dispositive

The district court relied heavily on the fact both cases invoked TINA and FAR. The Fifth Circuit treated that overlap as insufficient—consistent with United States v. Millenium Lab'ys, Inc., where the First Circuit found distinct kickback mechanisms could avoid first-to-file even under overlapping legal frameworks. In short, “same statute” does not equal “same essential facts.”

D. The court’s treatment of Ferguson’s “six points” and why only one mattered

The panel walked through the district court’s six-factor discussion, largely to show the district court’s mistake was conceptual rather than arithmetic: “order of proof,” “key documents,” “different FAR provisions,” “different witnesses,” and “different aircraft programs” were mostly either (i) true but non-dispositive, or (ii) incapable of establishing sameness or difference by themselves. The decisive issue remained whether the complaints alleged the same scheme.

E. Policy alignment: anti-parasitism without “inoculation”

The opinion frames Ferguson as the kind of relator the FCA intends to encourage—someone alleging a distinct fraud that could expand recovery—rather than a “bounty hunter[]” (quoting Wisconsin v. Amgen, Inc., 516 F.3d 530 (7th Cir. 2008)) stacking onto an already exposed scheme. The court relied on United States ex rel. Hartpence v. Kinetic Concepts, Inc. and United States ex rel. Lujan v. Hughes Aircraft Co., 243 F.3d 1181 (9th Cir. 2001), to emphasize that allowing “related but distinct” fraud claims may increase overall recovery and broaden investigations.

F. The concurrence: a sharper statutory-text lens and a warning against TINA “company-wide” immunity

Judge Rodriguez agreed with the result but wrote separately to stress two points:

  • Text matters: § 3730(b)(5) bars only a “related action based on the facts underlying the pending action.” The concurrence emphasized that courts must compare facts—not merely legal labels or “elements.”
  • Complex regimes matter: In defense procurement, TINA compliance involves vast, heterogeneous data. Treating any one TINA suit as notice of all TINA violations would “strain credulity” and risk “inoculat[ing]” contractors against comprehensive liability for distinct misconduct.

The concurrence also rejected the idea that Ferguson’s earlier motion characterizing the cases as “substantially related” (for judicial administration) estopped her from opposing first-to-file: case-management relatedness is not the same as factual identity of schemes.

G. The dissent: “common contracts and systemic false certifications” should bar at least the F-35 portion

Judge Jones would apply U.S. ex rel. Branch Consultants v. Allstate Ins. Co. broadly, focusing on overlapping F-35 LRIP contracts and what she viewed as the “gravamen” of both suits: management-approved false certifications concerning subcontractor costs under TINA/FAR. In her view, the different inflation techniques (bulk discounts versus labor inflation) were “details” within the same essential fraud (false pricing certifications in the same contract ecosystem). The dissent also invoked (i) Ferguson’s prior statements about similarity, and (ii) repeated Government declinations as reinforcing a broad application of the bar.

3.3 Impact

A. A clarified Fifth Circuit “granularity” rule: mechanism-level comparison

The practical holding is a meaningful refinement for first-to-file disputes in the Fifth Circuit: a later relator can proceed—even against the same defendant and under the same procurement statutes—if the complaint alleges a different fraud mechanism such that the first complaint would not equip the Government to investigate and uncover the later fraud.

B. Defense-procurement FCA litigation: TINA/FAR claims will turn on “scheme mapping”

Defense contractors often face recurring FCA allegations tied to TINA/FAR/DFARS compliance. After Ferguson, first-to-file motion practice in such cases will likely become more forensic: parties will litigate which internal documents, pricing workflows, and audit pathways each complaint implicates, and whether one investigative trail reasonably leads to the other.

C. Strategic incentives for relators and defendants

  • Relators will likely draft complaints with greater emphasis on the “how”: identifying distinct operational processes (e.g., subcontractor audit restrictions, overhead pool manipulation, labor-hour falsification) rather than relying on generalized “inflated pricing” narratives.
  • Defendants will frame schemes at the highest defensible level (e.g., “systemic false TINA certifications”), as the dissent did, to argue that varied techniques still share essential elements.

D. Jurisdictional uncertainty remains

Because the court declined to decide whether first-to-file is jurisdictional (see Stein v. Kaiser Found. Health Plan, Inc.), parties should expect continued litigation on whether dismissal belongs under Rule 12(b)(1) or as a non-jurisdictional defense. That characterization can affect pleading burdens, waiver, and timing, even though it did not affect the outcome here.

4. Complex Concepts Simplified

  • Qui tam / relator: A private whistleblower (“relator”) may sue on behalf of the United States under the FCA and can receive a share of any recovery.
  • First-to-file bar (31 U.S.C. § 3730(b)(5)): Once a qui tam action is pending, others cannot file a “related action” based on the same underlying facts. The idea is to prevent copycat suits while still rewarding genuinely new information.
  • “Essential facts” / “material elements” test: Courts compare complaints to see whether they allege the same basic fraud scheme. Adding minor details or new locations usually does not help if it is the same scheme.
  • TINA (Truth in Negotiations Act): Requires contractors to disclose accurate, complete, and current “cost or pricing data” so the Government can negotiate fair prices.
  • FAR / DFARS: The Federal Acquisition Regulation and Defense FAR Supplement implement procurement rules, including documentation and cost/price analysis obligations.
  • Rule 12(b)(1) vs. 12(b)(6): 12(b)(1) challenges the court’s power to hear the case (jurisdiction). 12(b)(6) challenges whether the complaint states a plausible claim. The Fifth Circuit reversed only the jurisdictional dismissal and left sufficiency for remand.

5. Conclusion

Ferguson v. Lockheed Martin refines the Fifth Circuit’s first-to-file analysis by insisting that courts look beyond shared statutory labels (TINA/FAR) and beyond generalized characterizations like “overcharging.” What matters is whether the later complaint alleges the same fraud mechanism such that the earlier complaint would have equipped the Government to uncover the later scheme through a reasonable investigation.

By reversing dismissal, the court reinforced a balanced FCA policy: discouraging parasitic copycats while preserving incentives for insiders who expose distinct fraud pathways—particularly in complex procurement ecosystems where “TINA violations” can manifest through fundamentally different operational misconduct.