Mountain Peak, Inc. d/b/a Billiontree Technology USA, Inc., d/b/a Toner Kingdom (City of Industry, CA)

Let me gather more detail on the company's corporate identity and size.

Mountain Peak, Inc., d/b/a Billiontree Technology USA, Inc., d/b/a Toner Kingdom is a private California corporation (California Secretary of State Reg. #3991508) at 19945 Harrison Avenue, City of Industry, CA 91789. ITC complaint filings identify Jian Zhou as CEO and a director. The Toner Kingdom brand dates to 2008, and the "Toner Kingdom" U.S. trademark (Reg. No. 4817266) is registered to Jian Zhou individually. Billiontree Technology USA, Inc. is a related/predecessor entity. The company is privately held with no public ticker; no reliable public employee-count or revenue figures are available. A 2023 Central District of California ruling (ML Products v. Ninestar line of litigation) recorded that Zhou took the Toner Kingdom mark after BillionTree was dissolved, and that Mountain Peak is not BillionTree's corporate successor.

Operations. Toner Kingdom is an importer/distributor of third-party compatible and remanufactured ink and toner cartridges for HP, Canon, Samsung, Brother and Lexmark printers, sold through tonerkingdom.com and marketplace storefronts (Amazon storefronts "Palmtree" and "YangM"; eBay sellers including easy-life6, Freecart_Shop and Rainbow-Printer). It claims 150+ cartridge models. This is an operating reseller/brand owner, not a non-practicing entity.

Litigation posture. Defender only — 0 plaintiff cases, 1 defendant case in the tracked data — consistent with an operating importer targeted by patent enforcement rather than an assertion entity. All tracked activity is at the U.S. International Trade Commission under Section 337, not in district court, so no plaintiff-friendly district venue pattern applies.

Tracked case. Epson Portland Inc. et al. v. Dongguan Ocbestjet Digital Technology Co., Ltd. d/b/a Ocbestjet et al. (filed May 13, 2025), instituted as Inv. No. 337-TA-1452, Certain Ink Cartridges and Components Thereof II, asserting U.S. Patent Nos. 8,764,172; 9,370,934; 11,535,038; 12,240,248; and 12,240,249. Mountain Peak was found in default, and in the August 13, 2026 final determination the Commission found a violation and issued a general exclusion order plus a cease-and-desist order against it. A companion Epson investigation (337-TA-1451) named the same respondents. Separately, Billiontree Technology USA d/b/a Toner Kingdom was a defaulting respondent in Canon's 2018 toner-cartridge investigation (337-TA-1106).