Foreign States’ Amicus Curiae Participation in U.S. Antitrust Cases

41 Pages Posted: 18 Nov 2016 Last revised: 23 Nov 2017

See all articles by Marek Martyniszyn

Marek Martyniszyn

Queen's University Belfast - School of Law

Date Written: December 1, 2016


Foreign states’ amicus curiae briefs submitted before the U.S. courts are a special type of pleading. This article analyzes such submissions made in U.S. antitrust cases during the period 1978-2015, identifying which foreign nations used amicus briefs to present their views and what sort of issues attracted their attention. This piece examines also the issue of deference due to such filings, arguing that while foreign states’ submissions should be treated respectfully, they do not warrant a dispositive effect. Furthermore, this article outlines the practice of filing, explaining the shift from diplomatic correspondence towards amicus curiae submissions and the creation of a niche market of authoring them. It also indicates general trends in relation to stages of filings and the degree of their prevalence. Some broader comments are offered on the functions of foreign nations’ amicus filings and their contribution to the on-going development of competition law and policy internationally.

Keywords: antitrust, competition law, amicus curiae, deference, extraterritorial jurisdiction, foreign commerce

JEL Classification: K21, K33, K42, L40, L49, L44

Suggested Citation

Martyniszyn, Marek, Foreign States’ Amicus Curiae Participation in U.S. Antitrust Cases (December 1, 2016). 61(4) Antitrust Bulletin 611 (2016); Queen's University Belfast Law Research Paper No. 2871499. Available at SSRN:

Marek Martyniszyn (Contact Author)

Queen's University Belfast - School of Law ( email )

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