Under section 337, the USITC determines whether there is unfair competition in the importation of products into, or their subsequent sale in, the United States. Section 337 declares the infringement of a U.S.

Section 337 investigations conducted by the U.S. International Trade Commission most often involve claims regarding intellectual property rights, including allegations of patent infringement and trademark infringement by imported goods. Both utility and design patents, as well as registered and common law trademarks, may be asserted in these investigations.