Stephanie Hartmann's practice focuses on international economic regulation and trade policy, including trade remedies; WTO dispute resolution and market access issues; and sanctions, export control and customs matters. She frequently advises clients on high-stakes trade matters that implicate billions of dollars in international trade and has extensive experience developing policy initiatives and communications strategies to engage with government, industry and other stakeholders.

Ms. Hartmann has successfully represented US producers and respondents in antidumping and countervailing duty proceedings before the US Department of Commerce (Commerce) and US International Trade Commission (USITC). She played a leading role in successfully petitioning Commerce and the USITC for countervailing duties on Phosphate Fertilizer from Morocco and Russia and extending trade remedies in reviews of Softwood Lumber from Canada; Crystalline Silicon Photovoltaic Products; Polyethylene Terephthalate Film Sheet and Strip from India and Taiwan, Polyethylene Terephthalate Film Sheet and Strip from China and the UAE, and Polyvinyl Alcohol from China and Japan. These matters involved advising clients in the original agency investigations and reviews, as well as subsequent appeals in US courts and before binational panels under the US-Canada-Mexico Agreement. Ms. Hartmann has also represented respondents before Commerce and the USITC in cases involving aluminum extrusions, steel products, pea protein, paper shopping bags, mattresses, and passenger vehicle and light truck tires.

Ms. Hartmann has also successfully represented sovereign clients in WTO dispute settlement proceedings, including in Brazil – Certain Measures Concerning Taxation and Charges (DS472, 497) and United States – Countervailing Measures on Certain Pipe and Tube Products (Turkey) (DS523) and advised private clients in relation to WTO dispute settlement. Ms. Hartmann also worked with USTR as outside counsel to The Boeing Company on the compliance phases of European Communities and Certain Member States – Measures Affecting Trade in Large Civil Aircraft (DS316) and United States – Measures Affecting Trade in Large Civil Aircraft (Second Complaint) (DS353). These disputes involved successful challenges to foreign unfair trade practices that restricted billions of dollars of US trade per year, as well as successful defenses of US trade practices. Ms. Hartmann also advises clients on the WTO-consistency of existing and proposed measures and the feasibility of challenging barriers to market access at the WTO.

Prior to joining the firm, Ms. Hartmann served as a law clerk for the Honorable Timothy C. Stanceu of the US Court of International Trade. She was previously a litigation associate at another Washington DC law firm, where she handled matters related to international trade and civil litigation.

While in law school, Ms. Hartmann interned at the US Court of Appeals for the Federal Circuit and the Office of the Chief Counsel for Import Administration at the Department of Commerce. Prior to pursuing her law degree, Ms. Hartmann was an analyst in the Office of International Affairs at US Customs and Border Protection and an intern at a customs and international trade services provider.