George A. O'Brien

Corporate & Securities, Life Sciences, Public Policy, Regulatory & Government Affairs


George O'Brien is a partner in Mayer Brown's Washington DC office and a member of the Corporate & Securities practice. He works with life sciences companies of all sizes to assist them in developing and marketing innovative products that are regulated by the US Food and Drug Administration, including drugs and biologics, medical devices, drug-device combination products, CBD and botanical products, medical foods and dietary supplements.


  • Rising Stars, Food & Drugs, Washington DC Super Lawyers, 2018
  • Healthcare: Life Sciences, Recommended, Legal 500 US, 2020


  • University of Maryland Francis King Carey School of Law, JD, magna cum laude
    Order of the Coif
  • Dartmouth College, AB, cum laude
  • University of Pennsylvania, MA


  • District of Columbia
  • Maryland