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

March 30, 2021
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

Premium
December 19, 2025
PV Talk: Luminous Energy's Guy Lavarack says that interface risk, grid risk and talent risk are all key risk factors in Europe.
December 17, 2025
Germany has revised down the price ceiling for roof-mounted solar PV systems to €0.1/kWh (US$0.117/kWh) for tenders to be held in 2026.
December 15, 2025
France has awarded 507.7MW of solar PV capacity in its latest technology neutral auction, with only solar projects selected.
December 15, 2025
Solar manufacturer Maxeon has filed a new patent infringement lawsuit against fellow PV manufacturer Aiko before the Munich Regional Court I in Germany.
December 9, 2025
German renewables developer Blue Elephant Energy has signed two long-term power purchase agreements (PPA) with the German railway network operator Deutsche Bahn for utility-scale solar power projects.
December 5, 2025
WBS Power has sold the 150MW solar, 500MW/2,000MWh BESS Project Jupiter in Brandenburg, Germany, to investor Prime Capital.

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