Seiko Epson Corporation

Seiko Epson Corporation (Epson) is a Japanese electronics manufacturer founded May 1942 and headquartered at 3-3-5 Owa, Suwa, Nagano, Japan. It is publicly listed on the Tokyo Stock Exchange (ticker 6724) and operates as a standalone group, not a subsidiary of another company. Consolidated headcount is roughly 74,600 (FY2025, year ended March 31, 2025) and consolidated revenue was about ¥1.41 trillion (~$9.1–9.2 billion), with a market capitalization in the $6–8 billion range as of late 2026, according to company reporting and third-party financial data aggregators.

Operations. Epson reports three segments. Printing Solutions — its largest — covers office and home inkjet printers, commercial/industrial inkjet printers, serial impact and page printers, scanners, POS products, and consumables including genuine ink cartridges. Visual Communications covers LCD projectors and smart glasses. Manufacturing-related and Wearables covers industrial robots, small injection molding machines, watches and watch movements, crystal devices/quartz oscillators, semiconductors, metal powders, and PCs. U.S. subsidiaries include Epson America, Inc. (Los Alamitos, California) and Epson Portland Inc. (Hillsboro, Oregon).

Litigation posture. The structured case data shows Seiko Epson as a plaintiff in one tracked matter and a defendant in none — consistent with a large operating company that enforces its own intellectual property rather than a non-practicing entity. The single tracked proceeding is an enforcement action, not a defense.

Notable case. On May 13, 2025, Epson Portland Inc., Epson America, Inc., and Seiko Epson Corporation jointly filed a Section 337 complaint at the U.S. International Trade Commission alleging infringement of U.S. Patents 8,540,347; 9,061,508; 11,535,037; 11,820,150; and 12,246,539, targeting imports of "ink cartridges and components thereof" for Epson printers. The ITC instituted Investigation No. 337-TA-1451 on June 12, 2025, naming roughly 20 Chinese and U.S. respondents, including Dongguan Ocbestjet Digital Technology. Complainants sought a general or limited exclusion order and cease-and-desist orders. Several respondents defaulted; the Commission affirmed a violation and issued a general exclusion order and cease-and-desist orders against Mountain Peak and Straightouttank in 2026, per Federal Register notices. Third-party consumables are a long-running Epson enforcement focus.