German court upholds Hanwha Q CELLS patent infringement case

Facebook
Twitter
LinkedIn
Reddit
Email
As it stands, legal proceedings that challenge the validity of the ‘215’ and ‘689’ patents are pending before the European Patent Office (EPO), while the Düsseldorf Court judgment can be appealed to the Higher Regional Court of Düsseldorf. The Australian infringement case remains outstanding. Image: ISFH

The Regional Court of Düsseldorf, Germany has confirmed Hanwha Q CELLS patent ‘689’ infringement case against two major ‘Solar Module Super League’ (SMSL’s) members, JinkoSolar and LONGi Solar, as well as PV module manufacturer REC Group. 

Hanwha Q CELLS' ‘689’ patent is very similar to the ‘215’ patent that the US ITC recently rejected after its investigation into that patent’s claimed infringement. However, Q CELLS has also confirmed it would appeal the US ITC ruling. 

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

As it stands, legal proceedings that challenge the validity of the ‘215’ and ‘689’ patents are pending before the European Patent Office (EPO), while the Düsseldorf Court judgment can be appealed to the Higher Regional Court of Düsseldorf. A separate Australian infringement case remains outstanding.

Dr. Daniel Jeong, CTO of Q CELLS, said: “We are pleased that the Regional Court of Düsseldorf has confirmed what we knew to be true all along. As we eagerly stressed when we filed the lawsuit in 2019, intellectual property laws exist to incentivize innovation and protect those innovations from being unfairly used. The protection of intellectual property rights is of foremost importance for our fast-evolving solar industry to ensure continued development of breakthrough technological innovations.”

Q CELLS had previously indicated that it could include other PV cell manufacturers in future patent infringement cases.

Jeong added, “Also, we cannot ignore the possibility that the accused companies might have applied the ‘689’ patent to their other products. Q CELLS will continue to take all necessary actions including direct litigations as well as industry dialogues, if and when our rights are violated by another party in other regions.”

2 February 2027
London, UK
Returning in 2027 for its 14th edition, Solar & Storage Finance Europe will bring together the brightest minds representing funds, banks, developers, utilities, government and industry across Europe and the UK on a programme that is solutions-focused from top to tail. The event is designed to enable leaders at the forefront of solar and storage investment and deployment in Europe to scale, learn and land themselves industry defining partnerships.

Read Next

September 17, 2026
Zelestra has signed a PPA with German steel manufacturer Salzgitter Flachstahl for a new solar-plus-storage portfolio in Germany.
September 16, 2026
Over 90% of solar industry professionals report a growing project deployment pipeline in 2026, but new projects that are abandoned before completion now account for almost half of all project pipelines.
September 15, 2026
Guidance on China’s new national PV standards details how the regulatory environment is set to tighten for the country’s PV manufacturers.
September 11, 2026
This week's PV Chart of the Week profiles the technology breakdown of projected US solar module production capacity.
Premium
September 11, 2026
PV Talk: PERC has the potential to be a “workhorse” in the US cell manufacturing space, Suniva's Matt Card tells PV Tech Premium.
September 10, 2026
Hamburg-based solar PV construction firm Pvwerk has filed for reconstruction just days after its sister company, Enerparc, announced insolvency.

Upcoming Events

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
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye