the firm's post-grant practitioners are some of the most experienced in the country.


Artificial Intelligence (AI)
Artificial Intelligence (AI)
Digital Health
Digital Health
Energy & Renewables
Energy & Renewables

Fast Facts

About Our

Law Firm

About Our Law Firm

Headquartered within steps of the USPTO with an affiliate office in Tokyo, Oblon is one of the largest law firms in the United States focused exclusively on intellectual property law.

Get to know our


Get to know our History

Norman Oblon with Stanley Fisher and Marvin Spivak launched what was to become Oblon, McClelland, Maier & Neustadt, LLP, one of the nation's leading full-service intellectual property law firms.

Our Local and

Global Reach

Our Local and Global Reach

Outside the US, we service companies based in Japan, France, Germany, Italy, Saudi Arabia, and farther corners of the world. Our culturally aware attorneys speak many languages, including Japanese, French, German, Mandarin, Korean, Russian, Arabic, Farsi, Chinese.

A few of our


A few of our ACCOLADES

Oblon's professionals provide industry-leading IP legal services to many of the world's most admired innovators and brands.




From the minute you walk through our doors, you'll become a valuable part of a team that fosters a culture of innovation, client service and collegiality.

A few ways to

GET In Touch

A few ways to GET In Touch
US Office

Telephone: 703-413-3000
Learn More +

Tokyo Office

Telephone: +81-3-6212-0550
Learn More +


Patent Forms

Downloadable Patent Forms

The United States Patent and Trademark Office (USPTO) issued final rules implementing the inventor's oath or declaration provisions of the America Invents Act (AIA) on August 14, 2012.

Yongan (Allen) Yuan, Ph.D.

Yongan (Allen) Yuan, Ph.D.

Technical Advisor
T: (703) 412-1421
F: (703) 413-2220
Download Summary PDF
Download Detailed PDF

Yongan (Allen) Yuan, Ph.D., is a technical advisor in the firm's Chemical Patent Prosecution group focusing on patent preparation and prosecution for domestic and international clients. Allen’s technical expertise includes extensive knowledge in the areas of organic chemistry and catalysis, drug discovery and formulation development, specialty chemicals and materials.

Prior to joining the firm, Dr. Yuan worked as a scientist at Corteva Agriscience focusing on design and development of novel formulation and delivery technologies for new and registered active ingredients. He's had extensive experience working closely with commercial, regulatory, operations, legal, and R&D in a highly collaborative setting delivering business objectives and growing the platform.

Dr. Yuan obtained his doctoral degree in organic chemistry at Georgia State University under the supervision of Prof. Hao Xu, where he conducted research in complex-molecule synthesis and transition metal catalyzed asymmetric catalysis. His research of iron-catalyzed nitrogen atom transfer reactions enables new approaches to drug discovery and development. Dr. Yuan holds 7 technical publications and 2 patents and patent applications.


  • Georgia State University
    • Organic Chemistry, Ph.D. 
  • Ocean University of China
    • Chemistry, B.S. 


  • Y. Yuan, et al. “Iron Catalyzed Direct Diazidation for a Broad Range of Olefins.” Angew. Chem. Int. Ed. 2016, 55(2), 534-538
  • Y. Yuan, et al. “Iron(II)-Catalyzed Intramolecular Aminohydroxylation of Olefin with Functionalized Hydroxylamines.” J. Am. Chem. Soc. 2013, 135(9), 3343–3346
  • Y. Yuan, et al. “Studies on Synthesis, DNA Binding Action and Bio-toxicity of Zn(II)-Trp- Phen Complex.” J. Chem. Bioeng. 2013, 30(3), 2162–2166
  • Y. Yuan, et al. “Triazole-Forming Waterborne Polyurethane Composites Fabricated with Silane Coupling Agent Functionalized Nano-silica.” J. Colloid Interface Sci. 2011, 361(2), 483–490

Patent and Patent Applications

  • Y. Yuan, et al. “Gypsum panels, systems, and methods.” US 16/557,144
  • Y. Yuan, et al. “Fire-resistant gypsum panel comprising unexpanded perlite ore and method of making it” PCT/US2019/049075


  • Chinese

Professional Affiliations

  • American Chemical Society