Explainer | What are Section 337 investigations, and why is China so concerned about them?

Greater China
Source: South China Morning PostPublished: 10/07/2025, 11:45:01 EDT
Section 337 Investigations
USITC
Intellectual Property
US-China Trade Friction
TCL
Section 337 investigations are one of several tools used by the United States to target alleged unfair trading practices by Chinese companies. Photo: AFP

News Summary

Section 337 investigations, conducted by the US International Trade Commission (USITC), are one of the most potent US legal tools for policing intellectual property disputes, potentially leading to the total exclusion of products from the American market. This tool frequently targets Chinese companies, with over 40% of investigations completed in 2024 involving Chinese firms. Recently, the USITC launched probes into smart televisions made by Chinese electronics maker TCL, and earlier, into telecommunications devices from TCL and three other Chinese manufacturers. This explainer outlines how Section 337 investigations are being utilized against Chinese companies and Beijing's response to this threat.

Background

Section 337 investigations are authorized under Section 337 of the United States' Tariff Act of 1930 and are conducted by the US International Trade Commission (USITC), an independent federal agency, to investigate unfair trade practices involving imported products. These investigations primarily target patent and trademark infringement, as well as other unfair competition practices. During President Donald J. Trump's second term, US-China trade and technology competition is expected to remain elevated, with intellectual property protection and market access issues continuing as central friction points in the economic relationship. Section 337 investigations serve as a significant US trade defense tool, frequently employed to exert pressure on China.

In-Depth AI Insights

What are the deeper strategic intentions behind the Trump administration's ramp-up of Section 337 investigations? Beyond overt intellectual property protection, this move likely reflects broader economic nationalist and industrial policy objectives of the Trump administration. - Accelerating Technological Decoupling: By restricting Chinese high-tech products from the US market, the aim is to undermine the global competitiveness of specific Chinese industries and encourage the reshoring and development of domestic US supply chains. - Negotiating Leverage: Persistent investigations and potential market bans provide additional leverage for future trade negotiations with China, pressuring Beijing to make more concessions in areas like technology transfer and market access. - Voter Support: Emphasizing the protection of American businesses and combating perceived "unfair trade practices" helps solidify Trump's support base among certain voter demographics. How might Chinese companies respond to the increasing risks from Section 337 investigations? Facing uncertainty regarding US market access, Chinese companies will be compelled to adopt diversified response strategies. - Global Market Diversification: Reducing reliance on the US market by actively expanding into emerging markets like Southeast Asia, Europe, and Africa to spread risk. - Localized Production and R&D: Increasing investment in localized production and R&D in overseas markets (including the US) to circumvent trade barriers and legal risks. - Strengthening IP Defense: Enhancing their own IP portfolios and compliance capabilities, actively defending against lawsuits, seeking legal counter-actions, and collaborating with international law firms. - Indigenous Technological Innovation: Accelerating independent R&D in critical core technologies to reduce reliance on Western technology and build more resilient supply chains. What are the long-term implications of these investigations for global supply chains and investment patterns? Continued Section 337 investigations will accelerate the restructuring of global supply chains and have profound impacts on cross-border investment decisions. - Supply Chain "De-risking": Multinational corporations will increasingly prioritize supply chain resilience and security over mere cost efficiency, leading to more "nearshoring" and "friend-shoring." - Investment Flow Adjustments: Given heightened geopolitical risks, foreign direct investment (FDI) in high-tech sectors may shift from China to alternative production bases like Southeast Asia, India, and Mexico, or reshore to developed economies. - Technological Standard Fragmentation: Trade friction and technological protectionism could lead to a further fragmentation of global technical standards and ecosystems, forming parallel or even competing technological blocs, increasing operational complexity for businesses.