• State University of New York at Buffalo, B.A. chemistry
  • Wesleyan University, Ph.D. inorganic chemistry


  • U.S. Patent and Trademark Office (USPTO)


  • Mandarin (Fluent)

Agnes N. Xu, Ph.D.

Patent Agent

Agnes Xu is a U.S. Patent and Trademark Office (USPTO) registered patent agent in the Intellectual Property Group of Crowell & Moring’s New York office. Her practice focuses on patent preparation and patent procurement as well as client counseling in the chemical and biochemical arts.

She practices all aspects of patent law, including preparing and prosecuting patent applications, and providing support in opinion work, due diligence, and patent litigation. Agnes has experience with a wide range of technologies, including pharmaceutical chemistry, biotechnology, materials science, agrochemicals, cosmetics, metal alloys, polymers, catalysts, lubricants, coatings, and adhesives.

She received her doctorate in inorganic chemistry from Wesleyan University. Her graduate research interest was in medicinal inorganic and physical inorganic chemistry, with an emphasis on the fundamental aspects of coupled group/multielectron transfer reactions in solution. She received her B.A. in chemistry from the State University of New York at Buffalo, where she conducted research in the areas of coordination chemistry and biochemistry.

Prior to joining Crowell, Agnes was a patent agent at an intellectual property boutique law firm in New York City.

Representative Matters

  • U.S. Patent No. 11,331,214, “Device and Method of Treating Menopausal Hot Flashes,” issued May 17, 2022.
  • U.S. Patent No. 11,131,586, “Temperature Sensor Element,” issued September 28, 2021.
  • U.S. Patent No. 11,005,140, “Lithium Cell Having a Glassy Carbon Layer,” issued May 11, 2021.
  • U.S. Patent No. 10,971,752, “Composite Cathode and Lithium-Ion Battery Comprising Same, and Method for Producing Said Composite Cathode,” issued April 6, 2021.
  • U.S. Patent No. 10,930,933, “Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries,” issued February 23, 2021.
  • U.S. Patent No. 10,876,002, “Resin Composition For FRP, FRP Sheet and Molded Product,” issued December 29, 2020.
  • U.S. Patent No. 10,833,607, “Electret Element, Electrochemical Converter and Method for Manufacturing Electret Element,” issued November 10, 2020.
  • U.S. Patent No. 10,766,064, “Casting Component and Method for the Application of an Anticorrosive Layer,” issued September 8, 2020.
  • U.S. Patent No. 10,727,472, “Cathode, Cathode-Containing Lithium Ion Battery in the State Prior to the First Charging Process, Method for Forming a Lithium Ion Battery, and Lithium Ion Battery After Formation,” issued July 28, 2020.
  • U.S. Patent No. 10,693,204, “Lithium-Air Battery,” issued June 23, 2020.
  • U.S. Patent No. 10,680,278, “Composite Separator and Lithium Ion Battery Comprising Said Separator and Method for Producing Said Composite Separator,” issued June 9, 2020.
  • U.S. Patent No. 10,670,131, “Complex Cast Component and Casting Method Therefor,” issued June 2, 2020.
  • U.S. Patent No. 10,656,135, “Method for Determining a Mixing Ratio of N Organic, Miscible Components in a Mixture of Said Components and Use of an Inorganic Marker,” issued May 19, 2020.
  • U.S. Patent No. 10,513,764, “Reduced Cost Steel for Hydrogen Technology with High Resistance to Hydrogen-Induced Embrittlement,” issued December 24, 2019.
  • U.S. Patent No. 10,458,361, “Coating for Metal Components, Method for Coating a Metal Component, Piston for Internal Combustion Engines and Motor Vehicle,” issued October 29, 2019.
  • U.S. Patent No. 10,407,759, “Cost Reduced Steel for Hydrogen Technology with High Resistance to Hydrogen-Induced Embrittlement,” issued September 10, 2019.
  • U.S. Patent No. 10,403,897, “Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries,” issued September 3, 2019.
  • U.S. Patent No. 10,378,125, “Method and Device for Processing Carbon Fiber Strands,” issued August 13, 2019.
  • U.S. Patent No. 10,297,863, “Electrolyte Additive and Metal Included in Composite Electrode Containing Mg, Al, Cu, and Cr for Alkali Metal Energy Storage System,” issued May 21, 2019.
  • U.S. Patent No. 9,784,410, “Operating Method for a Cryopressure Tank,” issued October 10, 2017.
  • U.S. Patent No. 9,783,771, “Three Bioreactor System for the Cultivation of Mammalian Cells,” issued October 10, 2017.
  • U.S. Patent No. 9,751,282, “Plastic Component,” issued September 5, 2017.


  • "Hydride abstraction reactivity of haloruthenoceniums and haloosmoceniums," Organometallics, 15(22), 4888-4890 (1996). Co-Author: Agnes N. Xu.

Firm News & Announcements

August 11, 2021 DEAL NOTE: Crowell & Moring Advises BayWa Venture in Cross-Border Series B Investment in Amfora