Mei Jin Technology HK Co. d/b/a YBFeir / MJing

Company overview. Mei Jin Technology HK Co., Limited (Chinese: 香港美景科技有限公司), which also does business as "YBFeir" (rendered "YBFair" in some filings) and "MJing," is a Hong Kong private company limited by shares, company registration no. 2927745, incorporated 27 March 2020. Its registered address is Room 803, 43–51 Chatham Road South, Tsim Sha Tsui, Kowloon, Hong Kong. No parent, public listing, or funding is disclosed in available sources. It appears to be a small, closely held entity: French business-registry records (INPI/INSEE), reflecting a foreign-employer registration, list its activity as distance/catalog retail (APE 4791A), categorize it as a small or medium enterprise, and record no employees. No revenue or headcount figures are verifiable from public sources.

Products / services. The company operates as an online seller of third-party ("compatible") inkjet ink cartridges, principally Epson-compatible cartridges, sold through e-commerce marketplaces. Epson's ITC complaint states that an Epson representative visited a Mei Jin store named "YBFair" on Temu in August 2024. There is no evidence in public sources that Mei Jin manufactures cartridges; it appears to be a seller/distributor rather than a producer.

Patent-litigation posture. Mei Jin is a pure defendant — 0 cases as plaintiff, 1 tracked case as defendant — indicating an operating (reseller) entity targeted by a patent-holder enforcement action, not a patent assertion entity. The single tracked matter is the 13 May 2025 Section 337 complaint filed at the U.S. International Trade Commission by Epson Portland Inc., Epson America, Inc., and Seiko Epson Corporation against Dongguan Ocbestjet Digital Technology and co-respondents. There is no EDTX or district-court NPE activity.

Notable case context. The Epson matter was instituted as ITC Inv. Nos. 337-TA-1451 and 337-TA-1452 ("Certain Ink Cartridges and Components Thereof I and II"), asserting Epson cartridge patents including U.S. Pat. Nos. 8,540,347; 9,061,508; 11,535,037; 11,820,150; 12,246,539 (I) and 8,764,172; 9,370,934; 11,535,038; 12,240,248; 12,240,249 (II). Epson sought exclusion and cease-and-desist orders. In 337-TA-1452, an ALJ initial determination finding Mei Jin and other respondents in default was not reviewed by the Commission in November 2025.