Mark Nadeau > DLA Piper LLP (US) > Phoenix, United States > Lawyer Profile

DLA Piper LLP (US)
PHOENIX, AZ 85016-4232
United States
Mark Nadeau photo

Work Department

International Arbitration; Litigation, Arbitration and Investigations; Product Liability, Mass Torts and Product Stewardship; Oil and Gas; Appellate Advocacy; Commercial Contracts Disputes; Class Actions; Real Estate; Power and Transmission; Administrative Law; International Trade; Cross-Border Litigation; Employment; Corporate and Securities Litigation; Antitrust and Competition; Intellectual Property and Technology; IT and Telecoms Disputes; Construction, Engineering and Infrastructure Disputes; Projects, Energy and Infrastructure; Trademark and Copyright; Restructuring; Real Estate Funds and Private Equity; Real Estate Asset Management; Banking and Finance Litigation; Media, Sport, Gaming and Entertainment; Education; Hospitality and Leisure; Media, Sport and Entertainment; Technology; Energy and Natural Resources


Partner; Co-Managing Partner, Phoenix Office


Mark Nadeau is an advocate involved in complex commercial cases throughout the United States and has represented clients in many high-profile disputes.

Amongst the cases is significant industry focused work involving television, aviation, real estate hospitality, energy, trade secret and unfair business practice matters. His work in the energy sector has involved disputes concerning off-shore platform construction and insurance issues, nuclear plant and rod exchange programs, pipeline line siting and failures, drilling and extraction issues, as well as take or pay litigation. He successfully defeated a natural gas “cost of service gas” program involving long-term hedging of gas before five state public utilities commissions. He has served as lead counsel in high-profile satellite television multibillion-dollar disputes involving retransmission and antitrust issues. On behalf of several aviation and launch-system clients, he has worked on issues involving rocket technology, joint venture disputes, cockpit avionics, license and patent claims, airworthiness, airframe and engine performance financing. With an extensive background in all types of real estate disputes, Mark has acted as lead counsel on several multi-party construction and hospitality cases involving the acquisition, development, financing, operation, and management of hotels, resorts, spas and golf courses. He has defended many class action suits.

Beyond a very active litigation practice in the United States, his international arbitration practice spans Europe, Asia and South America. Mark is widely recognized as a leading commentator and has chaired numerous symposia on international dispute resolution.


French, Russian


J.D., University of Pittsburgh School of Law; B.A., University of Colorado

Lawyer Rankings

United States > Dispute resolution > Product liability, mass tort and class actions: automotive/transport - defense

Led by Christopher Campbell in Atlanta, DLA Piper LLP (US) assists clients from the automotive industry with product liability litigation and class actions. Notably, Phoenix-based Mark Nadeau is defending Uber Technologies in a personal injury case regarding a homeless person who was struck by an autonomous vehicle. In addition, William Kiniry in Philadelphia is representing Porsche in litigation relating to the Cayenne Sport Utility engine, which contained an emissions control device designed to fool the designated emissions testing. In another highlight, the team is acting for Mazda in a consumer protection lawsuit filed by the New Mexico Attorney General’s Office regarding faulty airbags supplied by vendor Takata. Other clients include Michelin and Goodyear.