Dorsey & Whitney

Dorsey & Whitney is an international full-service law firm headquartered in Minneapolis, Minnesota, with approximately 700 attorneys across 22 offices in the United States, Canada, Europe, and Asia. The firm maintains a significant U.S. footprint, with offices in key markets such as New York, Washington D.C., Palo Alto, and Seattle, among others. Dorsey & Whitney is recognized as a large law firm, having been ranked #101 on the 2025 Am Law 200 based on its 2024 revenue of $513 million.

The firm’s Intellectual Property litigation practice covers a broad spectrum of technology areas. Its attorneys possess deep technical expertise in fields including mechanical engineering (e.g., ladder systems), medical devices (e.g., insulin pump technology, spinal implants, catheter technology), electronic devices, wireless communications, software, semiconductor devices, and clean energy technology. Dorsey & Whitney leverages an integrated international team, notably strong in addressing intellectual property matters for clients with cross-border mandates, particularly those involving Asia.

Dorsey & Whitney handles patent litigation for both plaintiffs and defendants, though its tracked case appearances indicate a preference for defense. The firm has successfully defended operating companies against infringement allegations. For instance, in Tricam Industries LLC v. Little Giant Ladder Systems LLC, Dorsey & Whitney secured a grant of summary judgment of noninfringement for its client, Tricam Industries, a decision that was affirmed by the U.S. Court of Appeals for the Federal Circuit. The firm also represents clients in cases such as Wacom Co., Ltd. v. Shenzhen Qianfenyi Intelligent Technology Co., Ltd. and Haemonetics Corporation v. Terumo BCT, Inc.

The firm also maintains a practice in post-grant proceedings before the United States Patent and Trademark Office (USPTO), with attorneys experienced in matters before the Patent Trial and Appeal Board (PTAB). Key partners in the IP litigation practice include Dr. Hui Shen, based in Washington, D.C., who focuses on patent litigation in federal district courts and the U.S. International Trade Commission (ITC) with a strong background in electrical systems and semiconductor technology; Erin Kolter, an Of Counsel in Seattle with extensive experience in patent and trademark litigation, PTAB proceedings, and Federal Circuit appeals, particularly in medical device and electronic device technologies; and Elliot Hales, based in Salt Lake City, experienced in patent infringement litigation in various U.S. District Courts, the ITC, and post-grant proceedings before the USPTO. Other notable attorneys include Mark A. Miller, William Cravens, Brett L. Foster, and Gregory S. Tamkin.