Defendant
1 case as defendant.
Milwaukee Electric Tool Corporation, commonly known as Milwaukee Tool, is an American multinational company headquartered in Brookfield, Wisconsin. Founded in 1924, it operates as a wholly-owned subsidiary of Techtronic Industries (TTI) Group, a Hong Kong-based multinational publicly traded on the Hong Kong Stock Exchange (0669.HK). As of April 2026, Milwaukee Tool employs approximately 9,600 people globally. Its parent company, TTI, reported total annual revenue of US$14.6 billion in 2024, with Milwaukee Tool contributing a significant portion, estimated at $9.9 billion in 2024.
Milwaukee Tool develops, manufactures, and markets a comprehensive range of power tools, hand tools, tool accessories, tool storage solutions, and personal protective equipment. Key product lines include the M12, M18, and MX FUEL cordless systems, known for tools such as drills, saws (including the Sawzall reciprocating saw), impact drivers, and outdoor power equipment. The company also offers the PACKOUT modular storage system. Manufacturing operations are conducted globally, including facilities in the United States, China, Germany, Mexico, and Vietnam.
In patent litigation, Milwaukee Electric Tool Corporation functions as an active two-way litigant, both asserting its intellectual property and defending its patents. The company has been involved in 3 tracked cases, appearing as a plaintiff in 2 cases and as a defendant in 1 case. The recent activity includes two plaintiff cases filed on May 23, 2024: Milwaukee Electric Tool Corporation et al. v. Unknown at the U.S. International Trade Commission (ITC), and Milwaukee Electric Tool Corporation et al. v. Klein Tools, Inc. in the Illinois Northern District Court. Concurrently, Milwaukee Tool is a defendant in a PTAB (Patent Trial and Appeal Board) case, Klein Tools, Inc. v. Milwaukee Electric Tool Corporation et al., suggesting a direct competitive dispute with Klein Tools, Inc.
Previously, in 2017, Milwaukee Tool was awarded a $27.8 million judgment in a patent infringement lawsuit against Snap-on Corporation. This case, tried in a Milwaukee federal court, involved patents protecting Milwaukee Tool's lithium-ion battery packs for cordless power tools. The jury also found the infringement to be willful, potentially allowing for increased damages.
An inter partes review was instituted by the PTAB on all challenged claims, finding a reasonable likelihood that the petitioner, Klein Tools, Inc., would prevail with respect to at least one of the challenged claims against the patent owners.