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About Us



Suite 1500. 1750 Tysons Blvd McLean VA 22102

William Zeitler opened his international trade and transactions practice at the Law Offices of William Zeitler PLC that he founded in May, 2005. He continued a career that began when he was appointed Division Chief, Unfair Import Investigations, at the U. S. International Trade Commission where he served from 1975-1985, followed by his practice as a partner at Verner Liipfert Bernhard McPherson and Hand from 1991-2002, his practice as Vice Chair of the Transportation and International Commerce Group at Thompson Coburn from 2002-2004, and his practice as Chair of the International Trade and Transactions Group at Sullivan & Worcester from 2004-2005.

Practice Areas

  • Section 337 litigation
    • Patent infringement
    • Trademark infringement
    • Trade secret misappropriation
    • Gray market imports
    • Unfair competition
    • Antitrust
  • Antidumping investigations
  • Countervailing duty investigations
  • Administrative reviews
  • Economic sanctions
  • Export compliance
  • Retaliatory tariffs
  • Customs and Border Enforcement

  • Provides advice and represents clients before U.S. government agencies in trade disputes.
  • Provides advice and or participates in civil litigation on behalf of clients in matters involving licensing, breach of contract, and fraud as needed to meet client expectations.
  • The firm will partner with other lawyers/law firms as needed in intellectual and litigation matters to bring about the best and most cost effective results for clients.

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