About Longi applies for photovoltaic inverter patent
A trade squabble between Hanwha Q Cells and some of the world’s largest PV manufacturers appears to be resolved in the all-important U.S. market.
A trade squabble between Hanwha Q Cells and some of the world’s largest PV manufacturers appears to be resolved in the all-important U.S. market.
The patent attempts to cover a specific type of PERC solar cell with a three-layer passivation structure, including a chemical passivation layer, a field-effect passivation layer, and a silicon nitride cover layer. The field-effect passivation layer contains aluminum oxide.
In short, LONGi Green Energy and Hanwha have reached a patent cross-licensing agreement, which marks an important step in the protection of intellectual property rights in the photovoltaic industry.
In mid-November, South Korea-based solar manufacturer Hanwha Q-Cells had announced that the Chinese Patent Office’s examination and invalidity department (CNIPA) had rejected nullity proceedings against two of its patents, related to high-efficiency silicon solar cells, filed by Chinese PV panel maker Longi.
Hanwha Q-Cells sued Longi as well as Jinkosolar and REC last year in Germany, the USA and Australia for possible infringement of its patents. This was rejected in the USA.
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6 FAQs about [Longi applies for photovoltaic inverter patent]
Does LONGi Solar have a patent infringement case?
Longi Solar stated that it 'would continue to resist baseless assertions of patent infringement.' The dismissal of Hanwha's technology patent claims in a separate case in the U.S. was confirmed by pv magazine, following a seizure of Longi Solar's PV panels in Rotterdam last month.
Did Longi invalidate a Hanwha Q-Cells solar cell patent?
Longi successfully invalidated Hanwha Q-Cells' solar cell patent US 9,893,215B2 in an earlier Intellectual Property Rights (IPR) proceeding. This proceeding was initiated after Hanwha Q-Cells filed a suit against Longi at the U.S. International Trade Commission (USITC) in 2019.
Which solar companies have filed a lawsuit against Rec & LONGi Solar?
In March 2019, the South Korean photovoltaic company filed lawsuits against Longi Solar, Jinko Solar and REC in Germany, the USA and Australia. These manufacturers are said to have infringed existing patents held by Hanwha Q-Cells for its passivated solar cell technology.
Is Longi's patent considered novel?
Although Longi's patent has been granted in many countries previously, it was considered to be not novel based on the analysis of Longi’s IP team, which filed an invalidity procedure, with evidence, in a number of countries.
Will longi'resist infringement' of Hanwha patents?
Longi today said it would 'continue to resist' Hanwha's baseless assertions of patent infringement'. That development appears 12 days after Hanwha carried out a seizure of a Longi panel shipment in Rotterdam on the basis of the potential for the infringement of Hanwha patents which apply in Europe.
How does Longi handle invalid patents?
Longi respects legitimate intellectual property rights and understands that valid patents play an important role in technological progress. However, invalid patents and attempts to enforce such patents negatively affect both the industry and the enterprises involved.