‘Solar Module Super League’ (SMSL) member Q CELLS has responded to the recent patent infringement lawsuit filed by REC Group in China, suggesting its patents in the case lack validity.

In a short response, Q CELLS claimed REC Group's split cell and junction box technology, which is patented in countries such as China, had been rejected in Japan in 2019.

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As a result, Q CELLS would be petitioning for the invalidity of REC’s alleged patent in China. The SMSL member also noted that it was considering other “legal avenues”.

Q CELLS has previously sued REC Group, JinkoSolar and LONGi Solar over PERC (Passivated Emitter Rear Cell) processes with numerous cases pending and petitions of invalidity ongoing.

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PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.

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c-si manufacturing, china, patent infringement, pv modules, q cells, rec group

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