Sony Kabushiki Kaisha ("Sony Corporation," now Sony Group Corporation) is the Japanese legal entity of the Sony group, headquartered at 1-7-1 Konan, Minato-ku, Tokyo. It was founded May 7, 1946, and is publicly listed on the Tokyo Stock Exchange (6758) and NYSE (SONY). Sony Group reported consolidated revenue of roughly ¥12.5 trillion (about $82 billion) for FY2025 and approximately 112,300 consolidated employees; it is a parent holding company rather than a subsidiary of another firm.
Operations. Sony operates across six reported segments: Game & Network Services (PlayStation consoles, network services, first-party software), Music, Pictures, Entertainment, Technology & Services (consumer electronics, TVs, audio, cameras), Imaging & Sensing Solutions (CMOS image sensors and other semiconductor devices sold to third parties, including smartphone makers), and Financial Services (insurance and banking). It also holds semiconductor fabrication operations through subsidiaries such as Sony Semiconductor Manufacturing.
Litigation posture. The tracked data show one case, with Sony as defendant and zero as plaintiff — the profile of an operating company being attacked rather than a patent assertion entity. The suit, Raytheon Company v. Sony Kabushiki Kaisha et al., was filed March 6, 2015 in the U.S. District Court for the Eastern District of Texas, Marshall Division (2:15-cv-00342, Judge Rodney Gilstrap), a venue historically favored by patent plaintiffs.
Case context. Raytheon asserted U.S. Patent No. 5,591,678, directed to methods of fabricating stacked microelectronic devices with back-side electrical connections — technology relevant to Sony's image-sensor and semiconductor manufacturing. The case was consolidated with a parallel Raytheon action against Samsung (2:15-cv-00341). Sony and Samsung jointly filed inter partes review petitions (IPR2015-01201, IPR2016-00209, IPR2016-00962); the Patent Trial and Appeal Board held the challenged claims unpatentable for obviousness, and the Federal Circuit affirmed in 2018 (Raytheon Co. v. Sony Corp.). No other appearances by this entity are recorded in the tracked data.