Defendant

Ningbo Deye Inverter Technology Co., Ltd.

1 case as defendant.

Cases
1
Active
0
1 closed
Filed
2025
Top venue
C.D. California
1 case

Company profile

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Ningbo Deye Inverter Technology Co., Ltd. (often "Deye Inverter Technology"; Chinese: 宁波德业变频技术有限公司) is a PRC company established August 20, 2007, headquartered at No. 26 South Yongjiang Road, Daqi, Beilun, Ningbo, Zhejiang. It is a wholly owned subsidiary of Ningbo Deye Technology Co., Ltd. (SSE: 605117), the Deye Group parent listed on the Shanghai Stock Exchange main board in April 2021. Deye's own materials and its Hong Kong listing prospectus state group revenue passed RMB 10 billion in 2024 and list roughly 6,000+ employees group-wide; the subsidiary itself reports registered capital of about RMB 300 million. Ningbo Deye Inverter Technology is an operating manufacturer, not a shell licensor.

Products / operations. The company designs, manufactures and sells photovoltaic power-conversion equipment: grid-tied string inverters (roughly 1–136 kW), hybrid/energy-storage inverters (3–80 kW), and single-phase microinverters (about 300 W–2.2 kW), including the SUN-G3 microinverter series. Sister entity Ningbo Deye ESS Technology Co., Ltd. and its US affiliate Deye ESS Technology USA handle battery packs and storage systems. The wider Deye Group also makes dehumidifiers and HVAC/environmental appliances. Products are sold in over 140 countries.

Patent-litigation posture. Deye Inverter Technology is an operating company defendant, not an assertor. Across the tracked data it appears in one case and only as a defendant (0 plaintiff / 1 defendant). The plaintiff, CyboEnergy, Inc., is characterized by Unified Patents as an NPE that has asserted "smart and scalable power inverter" patents against Home Depot, Duracell, Yotta Energy, Northern Electric Power, Hoymiles, APsystems and others. The suit was filed in the U.S. District Court for the Central District of California — not a plaintiff-friendly Texas venue.

Notable case. CyboEnergy, Inc. v. Deye ESS Technology USA et al. (2:25-cv-07964, C.D. Cal., filed 2025-08-22) named Deye ESS Technology USA and Ningbo Deye Inverter Technology as defendants, alleging infringement of U.S. Patent 8,786,133 and 9,331,488 over the SUN600G3–SUN2000G3 microinverters. The docket shows the case was voluntarily dismissed without prejudice on 2025-12-12 following a show-cause order for lack of prosecution. Deye has not publicly disclosed the matter.

CyboEnergy, Inc. v. Deye ESS Technology USA et al.

voluntarily dismissed
Docket:
2:25-cv-07964
Filed:
2025-08-22
Terminated:
2025-12-12

CyboEnergy, Inc. sued Deye ESS Technology USA and Ningbo Deye Inverter Technology Co., Ltd. asserting U.S. Patents 8,786,133 and 9,331,488. After an order to show cause regarding lack of prosecution, CyboEnergy filed a voluntary dismissal under FRCP 41(a)(1) on December 12, 2025, and the case was terminated.