ITC Rules No Violation in Shoals Technologies Solar Patent Dispute

Introduction

In a significant outcome for solar energy patent litigation, the United States International Trade Commission (ITC) issued a final determination of no violation in Shoals Technologies Group, LLC v. Hewtech (Shenzhen) Electronics Co., Ltd. (ITC Investigation No. 337-TA-1365). After 621 days of proceedings before Administrative Law Judge Monica Bhattacharyya, the case concluded on January 14, 2025, with judgment on the merits entered in favor of the Chinese electronics manufacturer.

The dispute centered on three patents covering solar panel electrical balance-of-system components — specifically lead assemblies and photovoltaic inline fuse connector assemblies — technology increasingly vital to utility-scale solar deployment. For patent attorneys and IP professionals tracking solar energy patent infringement trends, this ITC ruling carries meaningful implications: a domestic industry complainant asserting multiple patents across related product lines still failed to establish violation under Section 337.

The outcome invites scrutiny of ITC assertion strategies, claim construction risks, and the evidentiary burdens facing patent holders challenging imports in the renewable energy sector.

Case Overview

The Parties

Patents at Issue

This litigation centered on three utility patents covering solar panel electrical balance-of-system components, critical for utility-scale solar deployment:

• • US11689153B2 — covering solar panel array lead assembly technology
• • US10553739B1 — covering photovoltaic inline fuse connector assemblies
• • US10992254B2 — covering additional photovoltaic connector assembly configurations

The Verdict & Legal Analysis

Outcome

The ITC’s final determination was unequivocal: No Violation Found. Judgment on the merits was entered for Defendant Hewtech. As a result, no exclusion order or cease-and-desist order was issued against Hewtech’s imported solar connector products.

Verdict Cause Analysis

A “No Violation Found” determination on the merits can result from several legal pathways: non-infringement, invalidity of asserted claims, or failure to establish a domestic industry. While specific claim construction rulings are not fully detailed here, the merits-based nature indicates a substantive evaluation of infringement and/or validity. Narrow claim constructions in connector and fuse assembly claims often disadvantage complainants, especially when accused products present design differences.