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994 F.3d 484
5th Cir.
2021
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Background

  • Under the Hatch–Waxman Act, the first generic filer can gain 180 days of market exclusivity; a brand suit within 45 days triggers a 30‑month FDA stay that delays generic approval.
  • Endo marketed Opana ER (extended‑release oxymorphone); Impax filed the first generic ANDA in 2007; Endo sued for patent infringement in 2008, triggering the stay.
  • In June 2010, shortly after FDA tentative approval of Impax’s ANDA, Endo and Impax settled: Impax agreed to delay launch until Jan 1, 2013; Endo agreed not to market an authorized generic during Impax’s 180‑day exclusivity and paid credits and up‑front/contingent payments (ultimately >$100 million), plus a $10M immediate payment tied to a collaboration.
  • Endo executed a product hop (reformulated Opana ER), shrinking the original‑formulation market; it later paid Impax about $102M in credits; Endo obtained further patents and injunctions against other generics and eventually withdrew the reformulation after FDA safety concerns.
  • The FTC challenged the settlement as an unlawful reverse payment (antitrust). An ALJ found the agreement restricted competition but lawful on balance; the full Commission reversed, found no procompetitive justification and viable less‑restrictive alternatives, and issued a cease‑and‑desist order against Impax.
  • The Fifth Circuit reviewed legal errors and substantial‑evidence support for the FTC’s findings and denied Impax’s petition for review.

Issues

Issue Plaintiff's Argument (FTC) Defendant's Argument (Impax) Held
Whether the settlement had anticompetitive effects (i.e., was a reverse payment that foreclosed competition) Large, unjustified payments and Endo’s concessions bought exclusion and replaced possible competition with certainty of none Payment reflected legitimate settlement value (litigation avoidance, services); not evidence of anticompetitive effect Held for FTC: large, unjustified payments plus context (FDA approval, product‑hop plans) supported inference of anticompetitive effect under Actavis
Whether the Commission had to assess patent strength / litigate patent validity to show anticompetitive effect Not required; a large unexplained reverse payment is a workable surrogate for patent weakness and anticompetitive risk Argues Actavis requires court to weigh patent strength (likelihood brand would have won) before inferring anticompetitive effect Held for FTC: Actavis rejects requirement to litigate patent validity; payment size can substitute for patent‑strength inquiry
Whether the settlement produced cognizable procompetitive benefits tied to the challenged restraint Any procompetitive benefits were not tied to the reverse payment itself; claimed benefits (earlier entry, licenses) did not justify the large payment Settlement advanced procompetitive benefits (earlier entry than patent expiry, licenses, collaboration) that outweighed harms Held for FTC: Commission found no nexus between reverse payment and procompetitive benefits (and alternatively treated benefits as achievable without payment)
Whether less‑restrictive alternatives (e.g., no‑payment settlement with earlier entry) were feasible A no‑payment settlement with equal or earlier entry was practicable (industry practice, economic analysis, witness credibility issues) Impax contends a no‑payment, earlier‑entry deal was infeasible and the Commission shifted burden Held for FTC: substantial evidence (industry data, credibility findings, economic logic) supported existence of less‑restrictive alternatives; settlement was unreasonable

Key Cases Cited

  • 570 U.S. 136 (Sup. Ct. 2013) (holding reverse‑payment patent settlements are evaluated under the rule of reason; large unexplained payments suggest anticompetitive effect)
  • 138 S. Ct. 2274 (Sup. Ct. 2018) (articulating burden‑shifting framework for rule‑of‑reason analysis)
  • 476 U.S. 447 (Sup. Ct. 1986) (deference to FTC’s informed judgment and substantial‑evidence standard for agency factfinding)
  • 842 F.3d 34 (1st Cir. 2016) (explaining reverse payments can prolong a bottleneck and delay subsequent generic competition)
  • 300 F.3d 620 (5th Cir. 2002) (describing balancing step in rule‑of‑reason analysis)
  • 868 F.3d 132 (3d Cir. 2017) (finding large payments in settlement supported inference of anticompetitive effect)
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Case Details

Case Name: Impax Lab v. FTC
Court Name: Court of Appeals for the Fifth Circuit
Date Published: Apr 13, 2021
Citations: 994 F.3d 484; 19-60394
Docket Number: 19-60394
Court Abbreviation: 5th Cir.
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    Impax Lab v. FTC, 994 F.3d 484