Phoebe Xi
Counsel Patent Attorney

Phoebe Xi is the head of the Biochemistry Patent Department at Chang Tsi & Partners. Her career began in 2011, and since then, she has continually expanded her expertise in patent law. Xi's extensive skills include patent drafting, patent prosecution, patent reexaminations and invalidations, patent portfolio management, and developing patent application strategies. Her professional capabilities cover a wide range of fields, including biomedical and health sciences, chemical and material sciences, environmental and energy technologies, and agricultural and food technologies.

Phoebe Xi has unique expertise in clean energy, small and large molecule drugs, diagnostics, and food technology. Before joining Chang Tsi & Partners, she worked for three years in the R&D department of a renowned energy company in China, enriching her knowledge and experience. Throughout her career, Phoebe Xi has handled over 1,000 patent application cases.

+86 10 88369999
Patent Prosecution
Beijing

Practice Focus

Technical field

  • Pharmaceutical Research and Development
  • Genetic Technology
  • Biotechnology
  • Organic Chemistry
  • Inorganic Chemistry
  • Polymer Chemistry
  • Environmental Chemistry
  • Renewable Energy
  • Energy-Saving Technology
  • Environmental Protection
  • Water Treatment Technology
  • Bioagriculture
  • Food Science
  • Aquaculture

Number of Patent Applications Drafted or Prosecuted

More than 1000 patent applications

Years with IP Matters

2007 until now 

Professional Experience

Counsel,Patent Attorney, Chang Tsi & Partners, 2014 - Present
Patent Attorney, Jeekai & Partners, 2011 - 2014
R&D engineer, Patent Principal, Xinao Group, 2008 - 2011

Education

Master of Science in Physical Chemistry, Taiyuan University of Technology (2008)
Bachelor of Bioengineering, Inner Mongolia University of Technology (2005)

Representative Clients

  • Top 10 global pharmaceutical enterprises
  • Globally renowned biochemical enterprises
  • Globally known aircraft manufacturer
  • Well-known Chinese dairy company

Representative Cases

  • When the examiner intended to reject our client's crucial patent application, Phoebe Xi provided impeccable arguments based on the unexpected therapeutic effects of the patent application, resulting in the eventual grant of the patent. Due to her excellent performance, the client transferred their applications from other patent agencies to our firm.
  • Fully responsible for all patent work for a renowned American chemical company, earning the client’s deep trust. Additionally, during the review process of the company's patent applications, he successfully secured multiple reversals of rejection decisions, significantly protecting the client's interests.

Selected Awards

  • "Notable Practitioner" by IP Stars In 2024
  • Listed in Premium Intellectual Property Legal Service Brands Guide by Legal Vision in 2023

Bar Admission

Chinese Patent Bar

Languages

Chinese
English