Maxeon, Tongwei settle German shingled cell IP dispute

January 3, 2025
Facebook
Twitter
LinkedIn
Reddit
Email
The two companies have entered into a Settlement and Cross-Licensing Agreement. Image: Maxeon Solar Technologies.

Singapore-based solar manufacturer Maxeon has reached a settlement with Chinese solar giant Tongwei over a solar cell technology patent dispute.

Maxeon opened the case against Tongwei in Germany in June 2023. The case concerns shingled solar cell technology patents used in Maxeon’s Performance line modules, which it claimed Tongwei had been infringing on in the German market.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Now the two companies have entered into a Settlement and Cross-Licensing Agreement, ending the dispute.

Maxeon has launched a number of technology patent infringement disputes against solar manufacturing competitors over the last two years. Over the same period, the company has endured a string of negative financial results and a corporate restructuring late last year.

These lawsuits have concerned both tunnel oxide passivated contact (TOPCon) technology – predominantly in the US – and interdigitated back contact (IBC) and shingled cell technologies.

In October, the company appointed George Guo, formerly of Chinese conglomerate TCL Group, as CEO following the departure of former CEO Bill Mulligan. We spoke with Mulligan at the Intersolar Europe trade show this summer about the company’s financial struggles and its insistence on technology patent cases in a two-part interview (premium access).

TCL Group owns Maxeon’s largest shareholder, TCL Zhonghuan Renewable Energy Technology Co. Ltd (TZE). TZE invested around US$200 million in Maxeon last year to sustain its operations following disappointing Q1 2024 financial results.  

In November, Maxeon sold its non-US assets to TCL and announced plans to focus its operations entirely on the US market. Then, last month, the company announced plans to “re-create” itself under Guo’s leadership.   

Read Next

February 23, 2026
GameChange Energy has acquired the electrical balance-of-system division of Terrasmart, a US provider of tracker, racking and wiring solutions.
February 23, 2026
Polish IPP R.Power has raised US$50.7 million (€43 million) in finance to support the development of a 70.5MW solar PV portfolio in Poland.
February 23, 2026
Developer FRV is to hybridise a swathe of its Spanish PV fleet with batteries as part of a wider storage push in the country.
February 23, 2026
Enel has acquired an 830MW portfolio of operating solar and wind assets in the US from investment firm Excelsior Energy Capital.
February 20, 2026
NTPC has commissioned 165MW of solar capacity at its 1.25GW Khavda-II solar project in Gujarat.
February 20, 2026
Microsoft met all of its electricity demand with renewables in 2025 and has said it will continue to do so through 2030.  

Upcoming Events

Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain