William T. O'Brien

Partner - Washington, DC
wobrien@mckennalong.com
Download vCard
1900 K Street NW
Washington, DC 20006-1108
TEL: 202.496.7107
FAX: 202.496.7756
Print PDF

Experience

William O'Brien engages in complex civil litigation in international tribunals and federal and state courts. O'Brien has successfully litigated numerous commercial and government contract related disputes, and product liability matters. He litigates at the trial and appellate level and is experienced in class action and multi-district litigation.  He has experience in enforcement and defense against judgments from international courts.  He also works actively on matters involving U.S. Export Laws and Regulations and suspected violations of export control laws and the Foreign Corrupt Practices Act ("FCPA"). 

O'Brien is a strong advocate for legal services for the indigent community. He serves on the boards of area non-profit legal service clinics and represents indigent clients in disability and pension claims, landlord-tenant disputes, political asylum and criminal matters.

In recognition for his pro bono work, O’Brien received the American Cancer Society’s "Judicial Advocacy Award for Excellence."

Notable Engagements

International Matters

U.S. Representative Matters

Education

Admitted

Publications:

Civic Activities:

  • Member, American Cancer Society Cancer Action Network's Judicial Advocacy Initiative

Professional Activities:

  • American Bar Association (International/Litigation Sections)
  • Bar Association of the District of Columbia (Litigation Section)
  • British-American Business Association (Member, Board of Directors)
  • U.S. Council on International Business (Int’l Arbitration Committee)