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.   

2 December 2025
Málaga, Spain
Understanding PV module supply to the European market in 2026. PV ModuleTech Europe 2025 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of module supplier selection; product availability, technology offerings, traceability of supply-chain, factory auditing, module testing and reliability, and company bankability.

Read Next

November 7, 2025
JA Solar has signed a module supply agreement with EPC contractor Larsen & Toubro (L&T) for two utility-scale projects in Uzbekistan. 
November 7, 2025
Saatvik Green Energy, through its subsidiary Saatvik Solar Industries, secured solar PV module orders worth INR2.99 billion (US$33.7 million). 
November 7, 2025
Members of the European Parliament are urging the European Commission to restrict Chinese solar inverter manufacturers’ access to the bloc’s energy infrastructure, due to cybersecurity concerns.
November 7, 2025
Renewables asset fund Alantra Solar has secured €355 million to support the development and construction of five solar PV projects in Italy.
November 7, 2025
Independent power producer (IPP) Matrix Renewables has completed the construction of a 284MW solar PV plant in Texas.
November 7, 2025
Apple has signed a power purchase agreement (PPA) with Danish developer European Energy for renewable electricity from the 108MW Lancaster solar park in Victoria, Australia.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
November 12, 2025
10am PST / 1pm EST
Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Lisbon, Portugal