Klarquist

Klarquist is a prominent intellectual property (IP) boutique firm headquartered in Portland, Oregon, recognized as one of the oldest and largest full-service IP firms in the Pacific Northwest. Founded in 1941, the firm maintains a strong focus on technology and science. Klarquist has been consistently ranked as a top-tier IP law firm in Oregon by Chambers USA (2023, 2024, 2026) and nationally in the Silver band for patent litigation by IAM Patent 1000 (2025). The firm's attorney count is over 60, with more than 90% holding technical degrees.

Klarquist's IP litigation practice specializes in complex technology and intellectual property disputes. The firm's expertise spans diverse technological areas, including software and Internet technology, life sciences, medical devices, mechanical equipment, consumer products, electrical engineering, and semiconductors. While the firm states it represents both plaintiffs and defendants in patent infringement actions, its tracked appearances indicate a current emphasis on plaintiff-side representation, having acted as Lead Counsel and local counsel in such matters.

A notable case in the firm's portfolio is its role as Lead Counsel for ParkerVision, Inc. in its patent infringement actions against MediaTek Inc. et al. These cases, initiated in November 2022, involve patents related to wireless technology, including Wi-Fi. ParkerVision received largely favorable claim construction rulings in January 2024, with jury trials scheduled for December 2024 (though some have been postponed). Beyond its tracked cases, Klarquist has achieved significant outcomes, including a successful argument before the U.S. Supreme Court in Nautilus, Inc. v. Biosig Instruments, Inc., and obtaining an $8.42 million jury verdict in a false advertising action.

Klarquist also maintains a robust Post-Grant USPTO Proceedings practice, consistently ranking among the top firms nationwide for representing both petitioners and patent owners in inter partes review (IPR) disputes. The firm's IPR successes include fending off multiple IPR petitions for clients like Nautilus, Inc. and prevailing as a petitioner for Microsoft Corporation.

Key partners leading Klarquist's IP litigation practice include John D. Vandenberg and Jeffrey S. Love. John Vandenberg, recognized by Chambers USA, IAM Patent 1000, and Best Lawyers in America for multiple years, is a seasoned litigator who has argued before the Supreme Court and leads Patent Office trial proceedings. Jeffrey S. Love was named Best Lawyers: Lawyer of the Year for Patent Litigation in Portland in 2026 and is recognized for his expertise in patent litigation. Scott Davis is also a highly regarded intellectual property litigator, handling patent disputes for both plaintiffs and defendants.