Haynes Boone
Firm overview:
Haynes Boone has a large, prominent IP practice, covering the entire life cycle of patents, from prosecution to defence and enforcement. The firm is particularly recognised for its work in the technology, telecom and semiconductor sectors, representing major global corporations.
Over the past five years, the firm has submitted more than 19,000 US patent applications as well as thousands of foreign filings, across a diverse range of technologies. Haynes Boone is particularly noted for its patent prosecution work in the high-tech sector and is ranked among the most active firms in the US overall.
With contentious matters arise, the firm is well equipped for trials over complex IP across the complete spectrum of dispute resolution forums. Its attorneys have worked as past examiners at the US Patent and Trademark Office (USPTO), and as engineers or in-house counsel with leading technology companies.
Team overview:
Chair of the IP department Andrew Lowes focuses on IP law across various technical fields, particularly medical devices, computer software and hardware, telecoms, semiconductors and mechanical equipment. He advises several medical device companies on product clearance, IP transactions and other related matters. Lowes also has extensive experience in post-grant proceedings before the USPTO.
Partner David McCombs is highly active before the Patent Trial and Appeal Board (PTAB) and has four decades of experience in IP. He has acted as lead counsel for numerous Fortune 100 companies in inter partes review (IPR) proceedings before the PTAB and represented the world’s largest semiconductor foundry in patent-related matters.
IP trial attorney Eugene Goryunov left Haynes Boone in 2025 to join Brown Rudnick. Goryunov has appeared in more than 500 proceedings before the PTAB and was co-chair of the firm’s AI and Deep Learning practice.
Key matters:
- Masimo v Apple
Haynes Boone lawyers were on the team representing Apple in its high-profile clash with Masimo over blood-oxygen monitoring technology.
In November 2025 a federal jury found that Apple infringed Masimo’s patent and awarded $634 million in damages. Apple has indicated its intention to appeal.
- Intelligent Wellhead Systems v Downing Wellhead Equipment
Haynes Boone secured a victory in a Texas federal court for client Downing Wellhead Equipment in 2025. The court dismissed all patent infringement claims against the company, ruling that competitor Intelligent Wellhead Systems’ (IWS) wellhead control patents were ineligible.
This followed four IPR wins on behalf of Downing against IWS. Litigation between the parties is ongoing in Colorado, where Downing is asserting its own patents against IWS.
- Federal Circuit patent appeal victory for Unified Patents
The team represented Unified Patents before the Court of Appeals for the Federal Circuit, securing a ruling that affirmed the PTAB’s decision invalidating the claims of a patent asserted by Gesture Technology Partners.
Clients:
Apple, Downing Wellhead Equipment, Unified Patents
