Defendant
1 case as defendant.
Rakuten Group, Inc. is a Japanese technology conglomerate headquartered in Tokyo. Founded by Hiroshi Mikitani in 1997 as MDM, Inc., the company went public on the JASDAQ market in 2000 and now trades on the Tokyo Stock Exchange (TYO: 4755). Often referred to as the "Amazon of Japan," the company reported revenue of ¥2.279 trillion for fiscal year 2024 and employs over 29,000 people globally.
Rakuten operates a diverse ecosystem of over 70 businesses organized into three main segments: Internet Services, FinTech, and Mobile. Its core Internet Services include the e-commerce marketplace Rakuten Ichiba, the travel booking site Rakuten Travel, and digital content platforms like Rakuten Kobo (e-books) and Rakuten Viki (video streaming). The FinTech segment is a major contributor to revenue and includes Rakuten Card (one of Japan's largest credit card issuers), Rakuten Bank, and Rakuten Securities. In 2020, the company launched its Mobile segment, Rakuten Mobile, as Japan's fourth major mobile network operator.
As a patent litigant, Rakuten Group is an operating company defending itself against assertions. Based on the provided data, the company has been a defendant in one tracked case and has not appeared as a plaintiff. This posture is typical of large technology companies being targeted by non-practicing entities (NPEs). The single lawsuit was filed in the Eastern District of Texas, a venue historically favored by patent plaintiffs.
The tracked case, ContentNexus LLC v. Rakuten Group Inc, was filed in April 2026. The plaintiff, ContentNexus LLC, is characterized by industry sources as a patent assertion entity (PAE) that acquires and litigates patents related to signal processing and other technologies. This aligns with the assessment of Rakuten as an operating company defending against an NPE lawsuit.
The accused products are devices and related methods for processing signals.