To exclude during the course of any unfair import trade practice investigation involving an infringement of a patent, copyright, trademark, or mask work the entry into the United States of the articles concerned, upon a prima facie of such infringement.

Amends the Tariff Act of 1930 to prescribe conditions under which the U.S. International Trade Commission must temporarily exclude from entry into the United States patent, copyright, trademark, or mask work articles which it is investigating for alleged infringement and unfair import trade practices.