Adduci, Mastriani & Schaumberg LLP

David H. Hollander, Jr.

David H. Hollander, Jr.
t: 202-467-6300
f: 202-466-2006
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  •  ITC Trial Lawyers Association (Executive Committee)
  • American Bar Association


  • The George Washington University Law School LL.M., Intellectual Property Law
  • University of Maryland, School of Law, J.D.
  • Towson University, B.S.


  • Maryland
  • District of Columbia
  • U.S. Court of Appeals for the Federal Circuit

David H. Hollander, Jr. is an international trade and intellectual property attorney. Since 2001, David’s practice has focused almost exclusively on Section 337 unfair trade investigations before U.S. International Trade Commission (ITC). David has represented both complainants and respondents in complex investigations involving a variety of alleged unfair acts, including patent infringement and trade secret misappropriation, as well as post-investigation enforcement proceedings and appeals from the ITC to the U.S. Court of Appeals for the Federal Circuit. David's clients have included both large multinational corporations and smaller entities appearing for the first time in an ITC investigation.

Prior to joining the firm, David served for over six years as an Investigative Attorney in the Office of Unfair Import Investigations at the ITC. In that role, David became well-versed in the procedural and substantive nuances of Section 337 practice. Since leaving the ITC, David's practice has emphasized the unique aspects of Section 337, including the evolving "domestic industry" requirement. David draws on his experience and his knowledge of intellectual property law to provide effective and efficient advocacy on behalf of his clients.

David is an editor and contributing author to the first and second editions of the American Bar Association’s book entitled "A Lawyer's Guide to Section 337 Investigations Before the U.S. International Trade Commission."

David is an adjunct faculty member of the Johns Hopkins Carey Business School, where he teaches a course in Business Law. 

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Adduci, Mastriani & Schaumberg, L.L.P. is a Washington D.C. law firm and internationally recognized leader in the field of international trade law with an emphasis on Section 337 intellectual property litigation before the United States International Trade Commission (ITC).  Founded in 1981, the firm has over 30 years of experience practicing before the ITC, all other federal agencies involved in international trade, the United States Court of International Trade, and federal district and appellate courts.  As part of its Section 337 practice, the firm has participated in approximately one-third of all investigations instituted in the last ten years.  In other areas of international trade law, the firm represents clients in antidumping and countervailing duty proceedings, as well as advises clients on Customs valuation and classification, and on country of origin, duty preference programs, sanctions, and export control issues. The firm also advises clients on trade policy issues, including import and export opportunities and barriers, enforcement, and regulatory hurdles.  In addition to its international trade practice, the firm represents clients in a broad range of intellectual property disputes and counsels them on licensing and enforcement.

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