"knowledgeable and client-focused" and "has a strong reputation in the market…"
Legal 500 2015, 2016


Sydney Mintzer’s international trade and customs practice is primarily focused on helping clients to comply with US import regulations, optimize global sourcing options, identify markets for export and investment and eliminate barriers to market entry. A licensed customs broker, he has assisted major US and foreign corporations involved in customs audits, focused assessments, and other proceedings before US Customs & Border Protection. In addition, he has worked with clients to develop, implement and audit internal compliance programs and identify optimal sourcing patterns to minimize tariffs and duties.

Sydney’s practice includes representing clients in a variety of tariff proceedings, including ongoing Section 301 investigations. He has successfully represented clients in the interagency process used to determine the scope of Section 301 duties, both on behalf of clients seeking protection from imports as well as those seeking an exclusion to the duty. For clients subject to Section 301 duties, he has advised on how changes in their supply chain could be made to support a change in origin based on standard US rules of origin. Sydney also advises clients on the applicability of Section 232 duties imposed on imports of steel and aluminum as well as the related process for excluding imports from that duty regime.

Sydney represents clients in antidumping (AD) and anti-subsidy (CVD) investigations initiated in multiple jurisdictions. He has represented both domestic industries and foreign producers, exporters and importers in these investigations, which gives him an excellent understanding of the issues and factors surrounding these proceedings. Sydney also advises clients on customs-related aspects of AD/CVD orders, including advice on whether imported goods are subject to these orders, methods for obtaining exclusions to them, and representation in proceedings before US Customs & Border Protection seeking to exclude merchandise that evades AD/CVD orders.

In addition to representing clients before the US Department of Commerce and US International Trade Commission in US investigations, Sydney has represented US and European companies in AD and CVD investigations in the EU, China, India and Brazil. His breadth of practice has covered a wide range of industries, including mining, ferroalloys, steel, renewable energy, fertilizer, and textiles/apparel.

Sydney also has substantial experience working on trade-related disputes that arise around the world. For example, he has advanced market access concerns for clients with US policymakers to resolve barriers to entry in multiple jurisdictions, and he often advises clients on other countries’ WTO commitments and has represented sovereign clients in WTO disputes.

Sydney has been published in numerous professional journals and has served on the editorial board of the “China Trade Law Report,” a publication of The American Lawyer. He joined Mayer Brown in 2006.


  • 英语


University of California, Berkeley, 学士
Phi Beta Kappa

University of California, MA in Political Science and International Relations

New York University School of Law, JD


  • 华盛顿哥伦比亚特区


Member, NYU-NYLS International Economic Law Working Group
  • "On the customs law side, the team acts for domestic and foreign companies in matters before the US Customs and Border Protection. Sydney Mintzer leads the customs practice." Legal 500 USA 2020
  • "Among the best for customs law," Mayer Brown provides "service of the highest level in all aspects." Legal 500 2015