Mark Davies

Mark Davies' practice focuses on appellate litigation for technology companies, particularly ones that lead the world in hardware and software innovation. He is experienced in the Federal Circuit, the D.C. Circuit, other federal and state appellate courts, and the U.S. Supreme Court. He also develops trial court legal strategy, presents policy arguments to regulatory agencies, and advises on complex global disputes.

Mark is a highly successful appellate lawyer who has argued and briefed many cases, both in private practice and government. Mark has argued 50 appellate cases, including multiple arguments for one of the world's leading high-technology companies. He has handled many appeals for Asian and European companies in U.S. courts, including challenges to International Trade Commission actions. He has represented, often repeatedly, companies such as Bosch, Cisco, Intel, Nintendo, Nvidia, Oracle, TSMC, and Vizio. And he regularly helps defeat non-practicing entities such as Intellectual Ventures, IP Bridge, and Uniloc Corporation.

Legal 500 reports, "prominent in the high-tech field, Mark Davies...is praised for his 'unparalleled Federal Circuit experience.'" An interviewee noted that he "'is an outstanding leader of their appellate teams, as well as a skilled and subtle advocate. He really knows the Federal Circuit. Mark also has the crucial ability to see both the big-picture forest and the technically-detailed trees at the same time, and to weave them all together into a compelling story on appeal.'"

Mark is ranked in Chambers USA for Nationwide Intellectual Property: Appellate and Nationwide Appellate Law. Chambers USA 2023 quotes an interviewee that said: "He knows the Court's history, what the best arguments would be, how to present them and how to frame the issues to maximize the chances of the Supreme Court accepting cert." Another interviewee said: "He is very responsive and thoughtful. He has a great presence, a strong command of the cases he's arguing and good rapport with judges."

Mark's practice focuses on cutting-edge legal issues of particular importance to high-technology clients, including novel issues such as patent damages, standard setting, and artificial intelligence.

He is the author of the "user manual" for Federal Circuit appeals, Patent Appeals: The Elements of Effective Advocacy in the Federal Circuit (November 2017). His cases have involved virtually every area of patent law, as well as copyright, trade secret, and trademark law.

Mark is also the author of a legal treatise Artificial Intelligence: Law & Litigation (LexisNexis/Matthew Bender May 2024).

Mark appears frequently in federal district courts, serving as legal strategist in complex intellectual property cases. In high-stakes trials, he often leads 'appellate eyes' teams to set the stage for the inevitable appellate proceedings.

He also plays an active role in the development of U.S. technology policy and has represented clients at the Department of Justice, the Commerce Department, the Federal Trade Commission, the Patent and Trademark Office, and other government agencies. His amicus briefs on behalf of various technology clients are often cited in judicial opinions.

Mark also has a strong pro bono appellate practice, representing clients in the D.C. Court of Appeals, as well as the U.S. immigration and criminal systems. He is a member of the District of Columbia Court of Appeals Criminal Justice Act Panel.

Before joining White & Case, Mark co-founded a leading appellate practice, and also served as a member of the Appellate Staff of the Civil Division at the U.S. Department of Justice (1999¬2006), where he represented the U.S. Patent and Trademark Office, the Copyright Office, the International Trade Commission and other federal agencies before the Federal Circuit, other U.S. Courts of Appeals, and the U.S. Supreme Court. Mark also practiced with another major law firm appellate practice in Washington D.C.