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

April 9, 2026
Dutch-based solar developer Novar has acquired a 100MW solar PV plant in Baden-Württemberg, a southern state in Germany.
Premium
April 2, 2026
R.Power's Michał Swół speaks to PV Tech Premium about Germany's position as a leader in Europe's renewable energy auction space.
April 2, 2026
The German Federal Network Agency has awarded 155MW of rooftop solar of 283MW of available capacity in its latest tender.
April 1, 2026
The conflict in the Middle East could drive European solar PPA prices up by as much as 35%, according to Pexapark.
March 30, 2026
The German Federal Network Agency has launched an innovation tender, and aims to award 475MW of new solar PV capacity by May.
March 30, 2026
German researchers at the Technical University of Munich have identified and developed a solution to prevent weather-induced deterioration of perovskite solar cells.

Upcoming Events

Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland