On June 29, 2023, in Abitron Austria GmbH v. Hetronic International, Inc., 600 U.S. ___ (2023), the U.S. Supreme Court held that the Lanham Act could not extend to trademark infringement that occurred almost entirely outside the United States. While it is not surprising that the Court adhered to the longstanding presumption against extraterritorial application of U.S. law, the rationale underlying its decision may complicate future U.S. trademark actions to stop foreign-sourced counterfeits.