Philip L. O'Neill

Senior trial lawyer and business law counselor. Practice focus is intellectual property law, primarily trademark, copyright, unfair competition and trade secrets matters. Three decades of private practice experience in Washington, D.C. representing governments, businesses, associations and nonprofits in a wide range of commercial law issues, including IP, antitrust and trade regulation, professional credentialing, contracts, business torts, corporate acquisitions, and corporate governance. Appeared as counsel of record in more than 500 proceedings before federal and state appellate and trial courts, administrative tribunals (including the U.S. Trademark Trial and Appeal Board) and arbitration panels throughout the U.S. Tried more than 50 civil cases to verdict or decision.

Representative IP Litigated Cases

Perfetti Van Melle USA v. Cadbury Adams USA, No. 2:10-cv-35, E.D. Ky (trademark injunction)
Agrizap, Inc. v. Woodstream Corp., No. 2:04-cv-03925, E.D. Pa. (trial; patent & tort)
Pep Boys Manny, Moe & Jack v. Goodyear Tire, No. 01-cv-05614, E.D. Pa. (trademark injunction)
Big O Tires, Inc. v. Bigfoot 4x4, Inc., No. 01-B-349, D. Colo. (trademark injunction)



  • Georgetown University Law Center, J.D. – Staff, Georgetown Law Journal
  • University of Chicago, A.B. with General Honors

Bar Admissions

  • D.C. Court of Appeals
  • U.S. District Court (District of Columbia, Colorado and Michigan)
  • U.S. Tax Court
  • U.S. Court of Federal Claims
  • U.S. Court of Appeals (D.C., Fourth and Federal Circuits)
  • U.S. Supreme Court


  • American Bar Association
  • Intellectual Property and Antitrust Sections

Expert Witness

  • Playboy Enterprises International, Inc. v. Zillion Choice Sdn. Bhd., et al. (High Ct. of Malaya, Kuala Lumpur, Comm. Div., Suite No. D5-22-966-2007 (trademark licensing)
  • SS Herndon, Inc. et al., v. Mooradian, Va. Fairfax Cir. Ct., Case No. 2008-14207 (IP fee dispute)

Jacobson Holman PLLC
400 Seventh Street, N.W. Suite 700
Washington, D.C. 20004
Phone (202) 638-6666     Fax (202) 393-5350     E-mail

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