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Hsuanyeh Chang, PhD, Esq.

Patent Attorney & Attorney at law


Dr. Chang believes that the key to competent representation in patent matters is the ability to quickly and fully understand the technology involved in each case. Dr. Chang has extensive experiences with both general practice and boutique law firms, as well as both international and startup technology companies. In addition to English, Dr. Chang is fluent in Mandarin Chinese and conversational in German. Dr. Chang has drafted and prosecuted patent applications in the U.S., China, and Taiwan. He has also represented parties in post-grant proceedings before the U.S. Patent and Trademark Office for patents in concurrent district court litigations, resulting in favorable settlements for the client.


  • JD from Suffolk University Law School of Boston, Massachusetts
  • PhD inCondensed Matter Physics from the City University of New York.
  • MS andBS in Nuclear Physics from Chung Yuan Christian University in Taiwan.
  •  AA in English and German at Wenzao Ursuline University of Languages in Taiwan.

Technical Expertise

  • Computer software
  • Computer hardware
  • Semiconductor
  • Electronics
  • Mechanics
  • Optics
  • Medical devices
  • Nanotechnology
  • Bioassay
  • Liquid Crystal Displays (LCD)
  • Organic Light Emitting Diodes (OLED)
  • Telecommunication
  • Electronic circuits
  • Signal processing

Legal Experience

  • Preparation and prosecution of patent and trademark applications
  • Post-grant proceedings (ex parte reexam, inter partes review, etc.)
  • Formulating in-house patent strategies
  • Managing patent portfolios
  • Licensing intellectual property
  • Designing around competitor’s patents
  • Training R&D engineers on patent lawbasics
  • Appealing lower tribunal decisions

Practice Admissions

  • Massachusetts
  • New York
  • U.S. Patent and Trademark Office (USPTO)
  • U.S. Court of Appeals for the FederalCircuit (CAFC)
  • U.S. Supreme Court


  • Included in Lawyers of Color’s 2014 Hot List
  • Selected as a 2014-2015 Global Fellow of the Federal Circuit Bar Association

Let's work together

Contact Us


Hsuanyeh Chang, PhD, Esq.

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