ARM, Inc.

Company overview. The entity in our database as "ARM, Inc." is the U.S. subsidiary of Arm Holdings plc ("Arm"), a UK semiconductor intellectual-property company headquartered at 110 Fulbourn Road, Cambridge, England. Arm was founded in 1990 (spun out of Acorn Computers with Apple and VLSI Technology) and is publicly traded on Nasdaq under the ticker ARM following its September 2023 IPO; SoftBank Group remains the controlling shareholder. The company reported roughly $4.0 billion in revenue for the fiscal year ended March 2025 and Yahoo Finance lists about 9,600 full-time employees as of that date, with trailing-twelve-month revenue near $4.9 billion.

Products / services. Arm designs and licenses microprocessor and related silicon IP rather than manufacturing chips. Its product lines include Cortex-A, Cortex-R, Cortex-M and Cortex-X CPU cores; Neoverse cores and Compute Subsystems (CSS) for cloud and data-center servers; Mali and Immortalis graphics processors; Ethos neural/AI accelerators; system IP such as interconnects; physical IP; and development software and tools (including Keil). Revenue comes from licensing fees plus per-chip royalties paid by semiconductor, OEM and cloud customers.

Patent-litigation posture. This is an operating company defending, not an asserting entity. The structured data show zero plaintiff cases and one defendant case for ARM, Inc. That single suit was filed in the plaintiff-friendly U.S. District Court for the Eastern District of Texas, Marshall Division.

Notable case. Technology Properties Ltd. et al. v. ARM, Ltd. et al. (E.D. Tex. No. 2:05-cv-494) was brought in October 2005 by Technology Properties Limited and Patriot Scientific Corporation against Fujitsu, Matsushita, NEC and Toshiba affiliates — all Arm licensees. Arm intervened in September 2006 and became a defendant after infringement contentions pointed to Arm microprocessor technology. The plaintiffs asserted U.S. Patents 5,809,336, 5,784,584 and 6,598,148, associated with Patriot Scientific's microprocessor patent portfolio. The district court ruled for Arm, and the Federal Circuit summarily affirmed on May 9, 2008, holding that the ARM7, ARM9, ARM9E, ARM10E, ARM11 and Cortex core families did not infringe. Technology Properties is widely characterized as a non-practicing patent-assertion entity.