Xinsong Xu focuses on the preparation and prosecution of US and foreign patent applications in biotechnology. As part of his patent counseling practice, he has prepared non-infringement and invalidity opinions, freedom to operate, and due diligence analyses. He has also supported patent litigations and Inter Partes review proceedings. Dr. Xu has worked with a variety of technical fields including industrial microbiology, clean technology, therapeutic antibody engineering, protein chemistry, neural science, pharmaceuticals and consumer products, and agricultural biotechnology.

Dr. Xu has an outstanding academic background in biochemistry, cell biology, molecular biology, and toxicology. He also has expertise in environmental engineering and organic chemistry. As a graduate student and post-doctoral fellow, his research involved the investigation of mechanism of ubiquitin-dependent degradation of macro-molecules in the insulin signaling pathway, the dysfunction of which leads to type II diabetes and cancer. He served as a Review Editor for Frontiers in Molecular & Cellular Oncology, an open-access journal about tumor biology.

While in law school, he served as an Associate Editor of the Fordham Intellectual Property, Media & Entertainment Law Journal.

Dr. Xu is fluent in English and is a native speaker of Mandarin Chinese.


Inhibition of Cullin-RING E3 ubiquitin ligase 7 by simian virus 40 large T antigen

Second author, Proceedings of the National Academy of Sciences USA 111, 3371-6


Mount Sinai Research Achievement Award (2009)
C.V. Starr Scholarship Recipient


  • JD, Fordham University School of Law, 2012
  • PhD, Biochemistry and Cell Biology, Mount Sinai School of Medicine of New York University, 2008
  • MS, Environmental Health Science, New York University, 2003
  • BS, Environmental Biology, Nanjing University, 2000
  • District of Columbia
  • New York
  • US Patent and Trademark Office

Email Disclaimer