Q CELLS files patent infringement complaint against Astronergy in Germany, another in France

Facebook
Twitter
LinkedIn
Reddit
Email
The complaint relates to Q CELLS’ ‘689’ patent, which has also been the subject of complaints against JinkoSolar, LONGi Solar and REC Solar. Image: Q CELLS.

South Korea-based solar module manufacturer Q CELLS has filed patent infringement complaints in Germany against Astronergy, with a separate filing also made in France.

In a statement issued yesterday, Q CELLS confirmed it had filed a complaint against Astronergy, part of the Chint Group, with the Regional Court of Düsseldorf on 12 March 2021.

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

A separate complaint was also filed with the High Court of Paris on 19 March 2021, however Q CELLS has confirmed it can not reveal the subject of this complaint at this time.

The new filings follow a ruling reached by the Regional Court of Düsseldorf last summer that three other solar module manufacturers, namely JinkoSolar, REC Solar and LONGi Solar, had unlawfully incorporated Q CELLS patented technology into their respective solar products.

All three companies have appealed against the court’s judgement, with an appeal set to be heard by the Düsseldorf Higher Regional Court next month.

The complaints link to Q CELLS’ EP 2 220 689 patent, which covers solar cell passivation techniques which can be used in Passivated Emitter Rear Cell (PERC) technology.

Q CELLS said the new complaints represented the company’s “strong willingness” to protect its technological innovations, adding that it would “take all possible pathways” to stop any infringement of its patents.

“Technological innovation has always been the core tenet of Q CELLS’ proud history for more than 20 years. Q CELLS believes these lawsuits will protect our intellectual property rights and contribute to establishing a healthy innovation landscape in the solar industry,” Daniel Jeong, CTO at Q CELLS, said.

PV Tech has approached Astronergy, part of the Chint Group, for comment.

This story has been amended to clarify that Q CELLS’ complaint against Astronergy has only been confirmed to have been made in Germany, and the subjects of the manufacturer’s complaint in France cannot be revealed at this time.

Read Next

September 12, 2025
German trade association BSW-Solar has called the German government for a simplified, standardised and more digitalised grid access for solar PV and energy storage operators.
September 10, 2025
A project claimed to be Germany’s largest agriPV plant has been commissioned in the north-east of the country.
September 8, 2025
France has awarded 971MW of ground-mount solar capacity, to 165 projects, in the eighth round of the PPE2 PV tender.
September 4, 2025
Fraunhofer ISE has completed testing work of grid-forming inverters currently available in the energy industry.
September 3, 2025
Chinese solar manufacturer Trinasolar has signed a patent licence agreement with French module manufacturing startup Holosolis to use its TOPCon solar cell technology.
September 2, 2025
The Fraunhofer Institute for Solar Energy Systems (ISE) will build a pilot solar cell line in Germany to support US manufacturer Talon PV’s efforts to establish solar cell capacity in the US.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines