# 2026-15426: ITC Lets Imperial Star Join TOPCon Solar Patent Battle

2026-15426, Certain TOPCon Solar Cells, Modules, Panels, Components Thereof, and Products Containing Same; Notice of a Commission Determination Not To Review an Initial Determination Granting the Motion To Intervene of IC Star Solar (USA) LLC D/B/A Imperial Star, is a Federal Register notice from International Trade Commission published 2026-07-30 (as of 2026-08-06).

- Canonical: https://policyrisk.com/federal-register/2026-15426
- As of: 2026-08-06
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-15426
- Title: Certain TOPCon Solar Cells, Modules, Panels, Components Thereof, and Products Containing Same; Notice of a Commission Determination Not To Review an Initial Determination Granting the Motion To Intervene of IC Star Solar (USA) LLC D/B/A Imperial Star
- Type: Notice
- Agencies: International Trade Commission
- Citation: 91 FR 48189
- Published: 2026-07-30
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-08-06

## In one line

ITC Lets Imperial Star Join TOPCon Solar Patent Battle

## Summary

The U.S. International Trade Commission said yes to IC Star Solar (aka Imperial Star) joining a big investigation about certain TOPCon solar products. This case, started by First Solar, looks at whether some solar tech imported into the U.S. breaks patent rules. This move could shake up who sells these solar parts and when, with money and market impacts on the horizon.

## Abstract

Notice is hereby given that the U.S. International Trade Commission has determined not to review an initial determination ("ID") (Order No. 18) of the presiding administrative law judge ("ALJ") granting a motion to intervene filed by non-party IC Star Solar (USA) LLC d/b/a Imperial Star ("Imperial").

## Effects PRIA read

No economic effects identified for this document.

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## Sources
- [2026-15426 on federalregister.gov](https://www.federalregister.gov/documents/2026/07/30/2026-15426/certain-topcon-solar-cells-modules-panels-components-thereof-and-products-containing-same-notice-of)
- [2026-15426 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-07-30/pdf/2026-15426.pdf)

## Related
- [Previous: 2026-15425, Office of the Secretary; Amended Notice of Meeting](https://policyrisk.com/federal-register/2026-15425)
- [Next: 2026-15427, Office of the Director, National Institutes of Health; Notice of Meeting](https://policyrisk.com/federal-register/2026-15427)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-15426 (as of 2026-08-06).