Dr. Hui-Shan Sandra King is a member of the firm’s Intellectual Property practice group. A licensed pharmacist, Sandy applies her deep scientific and medical knowledge in counseling clients at the intersection of health care technology and law.

Sandy focuses her practice on patent preparation and prosecution in the health care and life sciences. She has extensive experience advising clients on global patent portfolios involving chemical compositions, pharmaceutical formulations and dosage forms, transdermal drug delivery systems, manufacturing processes, synthetic processes, therapeutic methods, drug packaging, medical devices and vaccines.

Sandy also has extensive experience conducting due diligence studies in support of licensing and acquisitions. She has prepared more than 500 patent opinions in the course of her career, including patentability, clearance, freedom-to-operate, validity and noninfringement opinions in various technology areas involving pharmaceuticals and medical devices.

In addition, Sandy’s background in pharmacy affords her a strong knowledge of small molecule pharmaceuticals, biopharmaceuticals, mechanisms of action, structure–activity relationships, pharmacology and pharmacokinetics.

Further, her extensive patent research experience and familiarity with related databases and tools enable her to serve clients across a wide range of technologies.


Prior to joining Armstrong Teasdale, Sandy spent more than 10 years as a patent attorney focusing on pharmaceutical, medical device and life science patents at a law firm in Alexandria, Virginia.

She also briefly served as an intern at the U.S. Food and Drug Administration in the Office of the Commissioner and Office of Policy, where she conducted research on drug re-importation and counterfeit drug issues and other proposed FDA regulations.


  • George Washington University Law School  (J.D., 2008)
  • Rutgers University Ernest Mario School of Pharmacy  (Doctor of Pharmacy, high honors, 2005)


  • Virginia
  • U.S. Patent and Trademark Office

Professional Activities

  • Asian Pacific American Bar Association (APABA)
  • Women in Bio

Charitable and Civic Involvement

  • Tzu-Chi Buddhist Compassionate Relief Foundation


  • Mandarin Chinese