Defendant
1 case as defendant.
Company overview. Chamberlain Group LLC (often shortened to "Chamberlain Group" or "CGI") is a privately held subsidiary of Blackstone, which acquired it from The Duchossois Group in September 2021. Founded in 1954 and headquartered in Oak Brook, Illinois, the company reports roughly 1,000–5,000 employees (Glassdoor) or about 5,800 (Built In); local press describes it as a roughly $2 billion company. As a private Blackstone portfolio company, it has no public ticker or market cap.
Products / operations. Chamberlain designs and manufactures residential garage door openers, commercial door and gate operators, smart video intercoms, security cameras, and access-control systems. Its brands include Chamberlain (DIY openers), LiftMaster (professionally installed openers and access products), Merlin, and Grifco, along with the myQ cloud/app smart-access platform and myQ Connected Garage vehicle integration. It also owns Controlled Products Systems Group (a perimeter-access distributor) and dock-leveler maker Systems LLC. Production is concentrated in Nogales and Sonora, Mexico.
Patent-litigation posture. Chamberlain is an operating company: of its one tracked case it appears only as defendant (0 as plaintiff). The sole tracked matter, IoT Innovations LLC v. Chamberlain Group LLC (filed 2026-09-02), was brought in the Northern District of Illinois—not a plaintiff-friendly venue like the Eastern District of Texas. The plaintiff, IoT Innovations LLC, is a non-practicing entity and Empire IP affiliate that Unified Patents and the Stanford NPE Litigation Database classify as a patent assertion entity, typically asserting acquired networking and connected-device patents.
Notable cases / context. The suit fits IoT Innovations' pattern of targeting makers of connected home/security products (TP-Link, Resideo, Brinks Home, Somfy, Nice, Lutron, Signify, Ecobee), and likely implicates Chamberlain's myQ-enabled smart openers. Separately, outside this database Chamberlain has historically enforced its own patents—e.g., a 2017 win against Techtronic Industries/Ryobi over garage-opener patents—but no such plaintiff actions appear in the tracked data.
Sources: Wikipedia; Glassdoor; Built In; Security Industry Association; Unified Patents; Stanford NPE Litigation Database; CB Insights; DeSoto Times.
IoT Innovations LLC sued Chamberlain Group LLC for patent infringement in the Northern District of Illinois. The complaint included Exhibit A, an evidence-of-use submission regarding infringement of U.S. Patent No. 7,161,960, and demanded a jury trial.