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Chanson Chang's practice focuses on patent litigation and advisory work in a variety of industries, such as medical device, pharmaceutical, wireless communication, and computer technologies. He has represented clients in both federal district court, including Hatch-Waxman cases, and the U.S. International Trade Commission. His experience encompasses all stages of litigation for both plaintiffs and defendants in complex patent cases, extending through appeal. He also has experience advising on patent issues relating to Orange Book listing and M&A due diligence.

  • Represented leading pharmaceutical company in Hatch-Waxman litigation in the District of Delaware concerning a topical treatment for acne.
  • Represented BKT Tires in patent and trademark litigation related to off-the-road tires in the Middle District of Tennessee.
  • Represented vaping-products manufacturer in APA challenge to FDA's deeming rule under the Tobacco Control Act.
  • Represented LEO Pharmaceuticals in Hatch-Waxman litigation in the District of Delaware concerning the Picato® product, a topical treatment for actinic keratosis.
  • Represented global medical company in Hatch-Waxman litigation relating to drug for ear infections in the District of New Jersey.
  • Represented leading medical device manufacturer in a patent infringement case involving endovascular stent grafts in the District of Delaware.
  • Represented Samsung as Complainant in an ITC action concerning 4G wireless communications technology.
  • Represented leading social media network service in patent infringement matter involving photo uploading and processing technology in the Northern District of Texas.

Pro Bono

  • Successfully represented client in criminal proceedings relating to burglary charges in Montgomery County, Maryland. 
  • Successfully represented client in immigration case resulting in green card; case was featured in Al Jazeera’s “Inside Story America.”

Previous Experience

  • Honorable Eric N. Vitaliano, United States District Court for the Eastern District of New York, Judicial Extern (Summer 2009)
  • Scientific Advisor assisting in patent prosecution and due diligence for mechanical, electronic, and chemical engineering technologies (2007-2008).