Defendant
1 case as defendant.
Sophos Inc. is the U.S. operating subsidiary of Sophos Limited, a British cybersecurity vendor founded in 1985 by Jan Hruska and Peter Lammer. The parent is headquartered in Abingdon, England, with U.S. offices including Burlington, Massachusetts. Sophos was listed on the London Stock Exchange from 2015 until March 2020, when U.S. private-equity firm Thoma Bravo took it private in a deal valued at roughly $3.9 billion. It remains privately held and Thoma Bravo-owned. Reported headcount was about 4,400 (2022), rising to roughly 6,000 with the Secureworks acquisition before a ~6% workforce reduction in 2025; revenue exceeded $1 billion by 2023 (per company statements and press coverage).
Products and operations. Sophos develops and sells cybersecurity software and hardware for businesses and managed service providers. Core lines include endpoint/intercept X protection, next-generation firewalls (XG Firewall) and unified threat management, email and cloud security, managed detection and response (MDR), incident response, and extended detection and response (XDR) via the Taegis platform acquired with Secureworks (closed February 2025 for $859 million). It also operates a threat-research unit. It is an operating company, not a patent-assertion entity.
Litigation posture. The tracked data show a single case with Sophos as defendant and none as plaintiff — the profile of an operating company defending against infringement claims rather than an NPE asserting patents. The venue is the U.S. District Court for the District of Delaware, not the plaintiff-friendly Eastern District of Texas.
Notable case. Alcatel-Lucent USA Inc. v. Cyberoam Inc. et al. (D. Del., filed May 2014) named both Sophos Inc. and its subsidiary Cyberoam Inc. (acquired February 2014). Alcatel-Lucent asserted five patents relating to network security and network management, alleging infringement through Sophos/Cyberoam products and services. Alcatel-Lucent USA is itself a subsidiary of Alcatel-Lucent SA; the case reflects a large network-equipment vendor asserting portfolio patents against a security-appliance maker. No merits conclusions are drawn here.
Sources: Sophos corporate newsroom; Wikipedia (Sophos); PitchBook; CRN; Bloor Research; Unified Patents litigation portal (1:14-cv-00628).
Alcatel-Lucent USA Inc. sued Cyberoam Inc. and Sophos Inc. in the District of Delaware asserting US 6,286,050 along with four other patents. The final disposition is not confirmed in the narrative.