Founded in 1978 and based in Washington, DC, Sterne Kessler is a premier law firm dedicated to intellectual property, focusing on the full range of IP services globally, including litigation, patent and trademark prosecution, design patents, IP strategy, post-grant proceedings, opinions, and transactional support.

The firm works with some of the most innovative clients in the world, including Fortune 500 companies, entrepreneurs, start-ups, inventors, venture capital firms, and universities. Whether prosecuting a patent or trademark, managing a worldwide portfolio, or litigating a bet-the-company case at trial, Sterne Kessler is committed to delivering practical solutions and excellent client service.

Sterne Kessler delivers innovative solutions that are tailored to its clients’ businesses. With deep technical knowledge and IP experience, the firm develops targeted and effective strategies to protect and enforce valuable IP assets. The team includes more than 200 lawyers, patent agents, and technical specialists who hold over 100 advanced degrees, including 60+ Ph.D.s, in science and engineering disciplines. The firm supports clients across a broad range of industries and technologies, including biotechnology and pharmaceuticals, electronics, artificial intelligence, software, innovative materials, consumer products, food & beverage, medical devices, automotive and heavy equipment, manufacturing, and industrial products, amongst many others.

In the last five years, Sterne Kessler has served as litigation counsel in 200+ patent cases across more than two dozen federal district courts. The firm is one of the top five most active firms for patent cases at the U.S. Court of Appeals for the Federal Circuit, and among the top 10% of most active firms at the U.S. International Trade Commission. The firm is particularly skilled at coordinating across multiple venues, representing clients in patent litigation in district court, before the ITC, and at the U.S. Patent Trial and Appeal Board (PTAB), pivoting between venues to efficiently and favorably resolve disputes.

The PTAB Trials team has been a leader since the inception of the PTAB and continues to be a dominant force in the industry today. Sterne Kessler has been counsel in more than 1,300 proceedings and counting, and its results are among the very best. Patexia consistently ranks the firm among the top 10 most active overall and the top 25 best performing firm overall in its PTAB Intelligence Report.
FIRM ACCOLADES:
• Band 1, Patent Prosecution, Washington, D.C., Chambers USA (2025)
• Tier 1, Patent Prosecution, PTAB Litigation, and Life Sciences IP, and Tier 3 ITC Litigation, National, Managing IP’s IP Stars (2025)
• “Highly Recommended” Patent Prosecution and Patent Disputes and “Recommended” Trademark Prosecution, District of Columbia, Managing IP’s IP Stars (2025)
• Tier 1, IP Litigation, Patent Litigation, Patent Law, and Biotechnology and Life Sciences Practice (D.C.), U.S. News – Best Lawyers – “Best Law Firms” (2025)
• Highly Recommended, Patent Prosecution and Transactions, IAM Patent 1000 (2025)
• Recognized for Trademark Prosecution & Strategy and Enforcement & Litigation, DC Metro Area, World Trademark 1000 (2025)
• 12 Years in a Row - Top Workplaces Recognition, The Washington Post (2025)