Sony EMCS Corporation (ソニーイーエムシーエス株式会社; English "Sony EMCS Corp."; commonly "Sony EMCS") was a Japanese electronics manufacturing company headquartered at Sony City, 1-7-1 Konan, Minato-ku, Tokyo. It was founded April 1, 2001, as a wholly owned, non-listed subsidiary of Sony Corporation (now Sony Group Corporation), formed by consolidating thirteen domestic production sites into an integrated design-and-production platform. Effective April 1, 2016, it was renamed Sony Global Manufacturing & Operations Corporation (SGMO). Public sources place the successor at roughly 3,900–4,200 employees in recent years, with reported revenue around ¥230 billion (FY2023); at formation Sony cited about 10,000 personnel and roughly ¥1.8 trillion in sales.
Operations. Sony EMCS handled engineering, product design, materials procurement, volume assembly/manufacturing, logistics, and after-sales repair for Sony electronics, and also offered ODM/OEM/EMS services to third parties. Its domestic "TEC" sites produced, among other things, broadcast- and professional-use AV equipment (Kosai), Blu-ray players/recorders, audio and video-conferencing systems (Kisarazu), camcorders and digital cameras (Koda, Minokamo), and BRAVIA televisions and printed-circuit-board mounting (Inazawa). It also administered Sony's overseas manufacturing, including Sony EMCS (Malaysia) Sdn. Bhd., which Sony agreed to transfer to TCL under a 2026 home-entertainment partnership.
Litigation posture. This is an operating manufacturer in a defensive posture: one tracked case, as a defendant, and zero as a plaintiff. It was named alongside its parent and affiliated Sony entities, not as an independent litigant.
Notable case. Raytheon Company v. Sony Kabushiki Kaisha et al., No. 2:15-cv-00342 (E.D. Tex., Marshall Division, filed March 6, 2015, before Judge Rodney Gilstrap), a patent suit asserting U.S. Patent No. 5,591,678 on microelectronic device fabrication. Co-defendants included Apple, OmniVision Technologies, and several Sony entities. The Sony defendants filed inter partes review petitions (IPR2015-01201, IPR2016-00209, IPR2016-00962); the PTAB invalidated the asserted claims, and the Federal Circuit affirmed in 2018.