Abstract
Illumina-Grail represents an important moment in antitrust litigation, reshaping the legal landscape for vertical mergers in innovation-driven markets. This Article analyzes the Federal Trade Commission’s uncommon achievement in blocking the Illumina-Grail merger—a ruling sustained by the Fifth Circuit Court of Appeals—emphasizing its significant ramifications for antitrust legislation. The case examines the complex dynamics of innovation competition and emerging market definition, challenging established doctrines regarding the inherently procompetitive nature of vertical mergers. This Article examines the changing criteria for defining relevant markets and evaluating competitive harm in research and development-oriented industries. It also discusses the Fifth Circuit’s support of the FTC’s strategy, including the controversial dismissal of Illumina’s suggested remedies and efficiencies. To be sure, Illumina-Grail highlights the increased scrutiny on vertical mergers, as they are instrumental in shaping a given innovation policy but also market dynamics and the burden-shifting framework in antitrust litigation.
Recommended Citation
Aurelien Portuese, Litigating Vertical Mergers: Innovation Dynamics from Illumina-Grail, 82 Wash. & Lee L. Rev. Online 374 (2025), https://scholarlycommons.law.wlu.edu/wlulr-online/vol82/iss5/2
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