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

January 6, 2026
Potentia Energy has raised AU$830 million in portfolio financing to support its renewable energy operations and development across Australia.
January 6, 2026
The Colombian National Environmental Licensing Authority (ANLA) has granted environmental approval to a 200MW solar PV project in the Chiriguaná area of Northern Colombia.
January 6, 2026
The Chinese government has released a range of policy measures to strengthen intellectual property (IP) protections in the country’s solar PV industry.
Premium
January 5, 2026
Don Cowan and Mahyar Mohammadnezhad of Kiwa PI Berlin explain the importance of upstream diligence in ensuring long-term PV performance.
January 5, 2026
Israeli renewable energy developer Nofar Energy will acquire an almost 1GW US utility-scale solar portfolio from bankrupt IPP Pine Gate Renewables.
January 5, 2026
BRUC has raised €474 million (US$554 million) to facilitate the addition of BESS to an 858MW Spanish solar portfolio.

Upcoming Events

Solar Media Events
February 3, 2026
London, UK
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
November 24, 2026
Warsaw, Poland