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Justin E. Loffredo
+1 202 408 4393

901 New York Avenue, NW
Washington, DC 20001-4413

+1 202 408 4000
Fax +1 202 408 4400

Bar and Court Admissions

  • District of Columbia
  • Massachusetts
  • U.S. Court of Appeals, Federal Circuit
  • U.S. Court of Appeals, Veterans Claims
  • U.S. Patent and Trademark Office


  • George Washington University Law School
    J.D., 2013
  • Johns Hopkins University
    B.S.M.E., Mechanical Engineering, 2007

Justin E. Loffredo


Justin Loffredo's patent practice includes litigation before district courts and the International Trade Commission (ITC), post-grant review proceedings before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office (USPTO), and strategic client counseling. He has taken and defended depositions; prepared expert witnesses for trial; developed positions on infringement and validity; and prepared pleadings, motions, and pre- and post-trial briefs.

Mr. Loffredo has brought and defended against patentability attacks under the America Invents Act (AIA) before the PTAB, including inter partes review (IPR), covered business method (CBM) patent review, and reexamination proceedings. He works closely with counsel in corresponding district court litigations to develop strategies in post-grant proceedings.

Mr. Loffredo counsels domestic and international clients across various industries, including medical devices, vehicular technologies, business methods, industrial manufacturing, automotive systems, and consumer goods. He provides strategic advice through freedom-to-operate analyses and opinions addressing validity and infringement of utility and design patents. He also drafts and prosecutes patent applications involving both mechanical and electrical technologies. 

Prior to joining Finnegan, Mr. Loffredo was a patent examiner at the USPTO, handling U.S. and international patent applications relating to refrigeration and automatic temperature and humidity regulation. He also worked as a mechanical engineer in the iron producing division of a steel mill in Maryland.


  • Chicago Mercantile Exchange Inc. v. Fifth Market Inc. (PTAB). Successfully represented Chicago Mercantile Exchange in multiple CBM reviews and an inter partes reexamination challenging the validity of patents related to automated trading systems.
  • Indoor Skydiving Germany GmbH v. iFLY Holdings LLC (PTAB). Defended iFLY Holdings' patent covering a wind tunnel for indoor skydiving. The PTAB denied institution.
  • Innovative Display Techs. LLC, et al. v. Hyundai Motor Co., et al. (E.D. Tex.; PTAB). Represented Toyota Motor Corporation in district court litigation and multiple IPR proceedings.
  • Wahl Clipper Corp. v. Philips (N.D. Ill.). Defended Philips against patent infringement allegations involving electronic consumer goods. Case settled favorably.
  • Pro bono activities include representing asylum seekers through Human Rights First, and assisting army veterans with appeals to the U.S. Court of Appeals for Veterans Claims. Successfully represented an asylum seeker before the Arlington Immigration Court.
  • Worked as a patent examiner at the USPTO, 2008-2011.
  • Leadership Council Member, Gifts For The Homeless, 2015-present.

Professional Recognition

  • Capital Pro Bono Honor Roll, 2016.

Professional Activities

  • American Intellectual Property Law Association
  • American Society of Mechanical Engineers

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