Defendant
7 cases as defendant.
Lexmark International, Inc. is a manufacturer of laser printers, imaging products, and related software and services. Founded in 1991 as a spinoff of IBM's printer and keyboard operations, the company is headquartered in Lexington, Kentucky. After being taken private in 2016 by a consortium of investors, Lexmark was acquired by Xerox in July 2025 and now operates as a subsidiary. As of November 2025, the company had approximately 13,000 employees worldwide.
Lexmark develops, manufactures, and sells a wide range of printing and imaging solutions for enterprise, small business, and home office use. Its primary product lines include color and monochrome laser printers and multifunction devices. The company also offers associated supplies like toner cartridges, as well as a suite of software and cloud-based services for managed print services (MPS), document management, and Internet of Things (IoT) solutions for connected devices. Lexmark serves numerous industries, including banking, healthcare, retail, and government.
The company's patent litigation history reflects that of an operating company defending its technology. Based on the provided data, Lexmark has appeared as a defendant in one tracked case and has not been a plaintiff. This defensive posture is consistent with a technology manufacturer being targeted by a patent assertion entity.
The single tracked case, filed in 2012 in the Southern District of California, was MPHJ Technology Investments, LLC v. Lexmark International, Inc.. The plaintiff, MPHJ, was a non-practicing entity widely described as a "patent troll" for its practice of suing numerous small businesses over patents related to scan-to-email technology. MPHJ's litigation campaign attracted scrutiny from state attorneys general and the Federal Trade Commission (FTC), which took action against the firm for using deceptive tactics in its demand letters.
Flexiworld Technologies, Inc. asserted US RE42,725 E and U.S. Patent Nos. 9,965,233, 10,642,576, and 10,846,031 against Lexmark International, Inc. Lexmark moved to stay and dismiss, both denied; it answered and counterclaimed. The action was settled, and four Lexmark suits were dismissed on June 6, 2023.
Lead case in the coordinated Lexmark actions. The court denied Lexmark's renewed partial motion to dismiss on March 20, 2023; the ultimate disposition was not confirmed in the retrieved sources.
Lexmark was one of several major technology companies targeted in MPHJ's litigation campaign. The case was terminated.
The Federal Circuit affirmed the decision of the Patent Trial and Appeal Board (PTAB) that claims 1–8 of US Patent 8488173 are invalid on the grounds of anticipation or obviousness.
Flexiworld's first action against Lexmark proceeded through the motion-to-dismiss stage; the court denied Lexmark's motion in part, including rejecting Lexmark's § 287(a) marking arguments. Final outcome was not confirmed in the sources retrieved.
Flexiworld Technologies sued Lexmark International in E.D. Ky. over Lexmark's Go Line wireless printers. The First Amended Complaint expressly pleads U.S. Patents 9,036,181; 10,140,071; and 10,873,856, but the narrative could not confirm a termination order, settlement, or judgment.
Flexiworld filed four April 2022 complaints against Lexmark asserting fifteen patents in total, expressly including the '178 patent; the actions were consolidated with 5:22-cv-00097 as lead (members 5:22-cv-00098, -00107, -00110). On March 20, 2023, the court denied Lexmark's renewed partial motion to dismiss and motion to phase discovery; later status not confirmed.