Stanley Electric Co., Ltd.

Stanley Electric Co., Ltd. (TYO: 6923; OTC: STAEY) is a Japanese manufacturer of automotive lighting and optoelectronic products. It was founded as Kitano Shokai on December 29, 1920, and incorporated under its current name on May 5, 1933; headquarters are at 2-9-13 Nakameguro, Meguro-ku, Tokyo. The company is publicly listed on the Tokyo Stock Exchange (TOPIX constituent) with no controlling parent; Honda Motor took a capital and business alliance stake in 2022. Reported group headcount is roughly 18,000–18,600, and consolidated revenue for the fiscal year ended March 2025 was about ¥509.6 billion (company securities report).

Operations. Stanley operates three segments: Automotive Equipment (about 86% of sales), making LED, HID and halogen headlamps, rear combination and turn-signal lamps, fog lamps and automotive bulbs sold to vehicle OEMs; Components (about 4%), comprising UV/visible/infrared LEDs, LCD devices, optical sensors and phototransistors; and Applied Electronic Products (about 10%), covering LCD backlight units, operation panels, UV disinfection systems, camera flash units, LED road/landscape lighting and LiDAR emitter modules. It has dozens of consolidated subsidiaries and plants across Asia, Europe and the Americas, and U.S. operations based in London, Ohio.

Litigation posture. Stanley is an operating company, not a patent assertion entity. Its single tracked appearance is as a co-petitioner — the plaintiff side of a PTAB proceeding — with zero tracked defendant cases, consistent with a supplier joining a defensive invalidity challenge rather than asserting patents offensively.

Notable case. Koito Manufacturing Co., Ltd. et al. v. Innovative Display Technologies LLC: Stanley and Koito jointly filed IPR2015-00574 and IPR2015-00575 on January 15, 2015, challenging U.S. Patents 6,508,563 and 6,886,956, which IDT — an Acacia Research Corporation subsidiary — asserted over "light emitting panel assemblies" in backlight litigation. The related district-court suits (e.g., IDT v. Hyundai Motor Co., No. 2:14-cv-201, E.D. Tex.) named Stanley's U.S. entities alongside automakers. The parties settled in July 2015; Acacia disclosed a license agreement with Koito and Stanley, and the IPRs were terminated before institution.