Maxeon, Tongwei settle German shingled cell IP dispute

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.   

3 November 2026
Málaga, Spain
Understanding PV module supply to the European market in 2027. PV ModuleTech Europe 2026 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

May 15, 2026
ISC Konstanz is upgrading its cleanroom facilities to operate a fully integrated solar cell and module pilot line by Q3 2026. 
May 15, 2026
India installed a record 15.3GW of solar capacity in the first quarter of 2026, according to new data from market research firm Mercom. 
May 15, 2026
Indian rooftop solar company Fujiyama Power has commissioned a 2GW solar module manufacturing facility in Ratlam, Madhya Pradesh. 
Premium
May 15, 2026
While CfDs are the most attractive route to market in UK solar, EDF's Ross Irvine says that there are opportunities for corporate PPAs.
May 15, 2026
New Zealand utility Meridian Energy has received consent to build a 120MW solar PV project alongside a planned battery energy storage system (BESS).
May 15, 2026
Construction has commenced on New South Wales’ (NSW) first integrated green hydrogen and ammonia production facility in Australia.

Upcoming Events

Solar Media Events
May 20, 2026
Porto, Portugal
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 2, 2026
Johannesburg, South Africa
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)