Haynes Boone

Haynes Boone is a prominent international corporate law firm headquartered in Dallas, Texas, operating as a full-service BigLaw firm. It maintains a substantial global footprint with 20 offices across the United States, including major hubs in New York, Chicago, Washington D.C., and California, as well as international locations in London, Shanghai, and Mexico City. Ranked as an AmLaw 100 firm, Haynes Boone employs over 750 lawyers, placing it among the largest law firms in the U.S.

The firm's Intellectual Property practice group comprises over 120 lawyers and offers comprehensive services across patent, trademark, and copyright infringement, trade secret misappropriation, and International Trade Commission (ITC) Section 337 actions. Haynes Boone's IP litigation expertise spans a broad range of technologies, including semiconductors, telecommunications standards (e.g., 4G LTE, 5G, Wi-Fi, Bluetooth), artificial intelligence, cloud computing, computer software and hardware, medical devices, imaging systems, oilfield technology, and automotive. Key clients include major technology and telecommunications companies such as AT&T, Cisco, Google, PayPal, Qualcomm, and Taiwan Semiconductor Manufacturing Company (TSMC). While the firm's tracked patent litigation appearances predominantly reflect plaintiff-side representation, its overall practice description indicates experience representing both plaintiffs and defendants.

Haynes Boone demonstrates a strong and active Patent Trial and Appeal Board (PTAB) practice. It is recognized as one of the nation's most active firms in PTAB trials and ranked in the top 10 for filing Inter Partes Reviews (IPRs) on behalf of petitioners, with a reported 78% institution rate and an 82% final decision rate for canceling claims as of 2022. The firm has handled over 700 IPR and Post-Grant Review (PGR) proceedings before the PTAB. In the 2025 Patexia PTAB Intelligence Report, Haynes Boone achieved top-10 rankings for both performance and activity, including being named the #2 Best Performing Law Firm for Petitioners.

Notable patent litigation matters include David M. O'Dell serving as lead counsel for the plaintiff in Kubota North America Corporation et al. v. Vermeer Manufacturing Co. While no public outcome for this specific case was immediately verifiable, the firm's IP litigation team, including partner Kenneth G. Parker, has secured significant jury verdicts, such as a $17.5 million patent infringement verdict for Panasonic Holdings Corporation. Daniel L. Geyser, who previously chaired the firm's U.S. Supreme Court Practice and Appellate Group, notably served as Appellate Counsel in a tracked, untitled plaintiff-side case before his departure to another firm in July 2026.

Key partners in the patent litigation practice include David M. O'Dell, Chair of the Patent Trials and Counseling Practice Group, recognized by Patexia as the nation's best-performing patent attorney in 2025 and a prolific IPR petitioner. Jonathan R. Bowser heads the Patent Office Trials Practice Group, focusing on high-tech patent disputes and Federal Circuit appeals. David L. McCombs is also a Chambers-ranked IP partner and a highly active PTAB attorney.