Ann Marie Duffy

Washington,  DC  U.S.A.
Phone+1 202 263 3418

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Experience & Credentials

Practice Areas

  • Intellectual Property
  • Patent Litigation
  • Trade Secrets
  • Trademark Litigation
  • Litigation & Dispute Resolution
  • Intellectual Property Litigation & Enforcement
Contact InfoTelephone: +1 202 263 3418
Fax: +1 202 263 3300
University James Madison University, B.A., cum laude, 1999
Law SchoolThe George Washington University Law School, J.D., 2002
Admitted2002, Virginia; 2005, District of Columbia; US Court of Appeals for the Federal Circuit; US Court of Appeals for the District of Columbia Circuit; US District Court for the Eastern District of Virginia; US District Court for the Western District of Virginia; US District Court for the District of Maryland

Ann Marie Duffy is a partner in Mayer Brown's Intellectual Property practice. She is experienced in various types of litigation, including patent and trademark infringement, theft of trade secrets, and breach of contract. Ann Marie's patent litigation experience has involved a range of technologies, including battery spill-containment devices, over-the-counter medical devices, on-line computer coupon generating software, MP3 audio compression, and JPEG image compression.

Ann Marie first chaired a bench trial in Virginia state court and has participated in trials before federal courts. She has also participated in Markman hearings, discovery motion hearings, dispositive motion hearings, and has taken the lead in various aspects of pre-trial discovery including motions practice and depositions. Ann Marie has briefed and argued three appeals before the United States Court of Appeals for the District of Columbia Circuit. She has also participated in cases in a number of federal courts, including the Eastern District of Virginia, Eastern District of Pennsylvania, District of Maryland, Southern District of New York, Northern District of Ohio, Western District of North Carolina, Eastern District of Texas, and Western District of Tennessee.

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Office Information

Ann Marie Duffy

1999 K Street, N.W.
WashingtonDC 20006-1101


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