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U.S. ITC Moves Forward in Epson Ink Cartridge Patent Case as Multiple Respondents Found in Default
The U.S. International Trade Commission (ITC) has announced that it will not review an administrative law judge’s determination finding several respondents in default in Investigation No. 337-TA-1451, involving alleged patent infringement of Epson ink cartridges. The decision allows the default ruling to stand as the case proceeds toward potential trade remedies.Most respondents are manufacturers or e-commerce sellers based in Guangdong, Jiangxi, or Hong Kong.
- Ocbestjet group
- Dongguan Ocbestjet Digital Technology Co., Ltd. (China)
- Ocbestjet Printer Consumables (HK) Co., Ltd. (Hong Kong)
- Tatrix International China Co., Ltd. (“Tatrix”) – Guangdong
- Luozhi Trading Co., Ltd. – Guangdong
- Shenzhen Hongxinyuan E-Commerce Co., Ltd.
(sells under the names Jianjai and Vi-US) - Shenzhen Kaizhen Technology Co., Ltd.
(uses the brand PayForLess) - Zhuhai Zhenyang Electronics Co., Ltd.
(brand: Oinkwere) - Shangrao Shixuan E-Commerce Co., Ltd.
(brand: Inkg o) – Jiangxi - Zhuhai Hengyunda Electronics Co., Ltd.
(brand: Upriin) - Zhuhai Rongtaida Electronics Co., Ltd.
(brand: Hookink) - Zhuhai Shi Wei Tai Electronics Co., Ltd.
(brand: Ondula-A) - Zhuhai Yixing Electronics Co., Ltd.
(brand: Greenjob USSOP) - Mei Jin Technology HK Co., Ltd.
(brands: YBFeir, MJing) – Hong Kong - ZhuHai MeiJiAn Trading Co., Ltd.
(brand: HaloFox) - Qiong Wang (an individual seller)
(brand: 7-magic) - Shen Zhen Sailing Technology Limited
(brand: Triple-Color) - Zhuhai Shuofeng E-commerce Co., Ltd.
(brand: super-ink-club)
U.S.-based respondents
- Mountain Peak, Inc.
(brands: Billiontree Technology USA, Inc. and TonerKingdom)
— Based in City of Industry, California - Straightouttaink, LP
(brands: discountinkllc and einkshop2014)
— Based in San Jose, California
Many respondents operate online under multiple trade names and allegedly import or sell aftermarket ink cartridges that infringe Epson’s patents. Some failed to participate in the investigation, leading the administrative law judge to issue an Initial Determination finding them in default. The ITC’s decision not to review that order means the finding becomes final.
The Office of Unfair Import Investigations (OUII), which serves as an independent party representing the public interest, is also participating in the case. With the default ruling now in effect, the Commission may move toward issuing exclusion orders or cease-and-desist orders against the defaulting parties if it ultimately finds a violation of Section 337.
Click here to download latest Dec. 5th 2025 rulling from the US courts.
- Ocbestjet group
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