Dr. Mangmang (Eric) Cai earned his Juris Doctor degree from the Georgetown University Law Center, Washington, D.C. Prior to earning his law degree, he received his Ph.D. degree in Organic Chemistry from the University of Maryland, College Park, and a Bachelor of Science degree in Chemistry from Peking University, China. Holding a professional law degree and a hard science degree from the most prestigious universities in the United States and China, Dr. Cai has acquired the knowledge and expertise to provide a full range of legal services in a manner rarely matched by other law firms. His practice focuses on Patent Law, U.S. Immigration Law, Commercial and Business Law, Intellectual Property, and Litigations. Prior to founding the New Weiming Law Group, Dr. Cai also worked for several major U.S. law firms and a lobbying group in the Washington, D.C. metro area. He has successfully advised and represented clients in cases involving immigration, patent application, contracts, and a variety of other legal matters.
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Practice Area
18 years
Sometimes
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Chat withState: District of Columbia
Acquired: 2009
No misconduct found
State: Virginia
Acquired: 2008
No misconduct found
7925 Jones Branch Drive, Suite 5150, Tysons, VA, 22102
Showing 1 - 5 of 251 client reviews from Avvo
Posted by anonymous | February 16, 2026 | Hired Attorney
Dr. Cai is a highly professional attorney who handled my EB-2 NIW application with great expertise and efficiency. At the time, he was the only lawyer who fully believed in the strength of my case, and he proved to be absolutely right.
Posted by anonymous | February 9, 2026 | Hired Attorney
Dr. Cai and his team is very professional to handle my and my spouse's EB1B application. They are fast responsive and responsible. Highly recommend!
Posted by anonymous | September 15, 2025 | Hired Attorney
Dr. Zhang, Dr. Yang, and Dr. Cai are very professional with my EB1A case! The whole I-140 submission and resubmission happened within a very short period in an extremely efficient manner!
Posted by anonymous | August 18, 2025 | Hired Attorney
I used Dr. Cai and his team’s services for both my wife’s and my NIW I-140 and I-485 petitions, as well as H1B/H4 extension applications twice. Everything went smoothly, and their professional service and guidance made this multi-year journey much easier for us.
Posted by Xiaoqiang | August 7, 2025 | Hired Attorney
My journey to obtaining a green card, transitioning from NIW to EB1A to I-485, was greatly supported by Dr. Yuanyuan Zhang and Xiao Yang. The timeline of my approvals speaks volumes about their professionalism and exceptional services. Here's a look at my approval timeline: 2022.10: Submitted NIW ...
"I'm pleased to endorse Mangmang. He is a top-notch immigration lawyer and a zealous advocate for his clients. A highly recommended attorney."
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2005
Top 0.1% in LSAT, Law School Admission Council (LSAC)
1991
First Prize, Chemistry Competition, Education System in China
2009 - Present
Attorney, New Weiming Law Group
2017 - Present
American Immigration Lawyers AssociationMember
2008 - Present
Virginia State BarMember
Mostly approved. See https://nwmlaw.com/approvals/casesummaries
2008
J.D.
2001
Ph.D.
N/A
BS - Bachelor of Science
2019
Current Trends and New Developments in Employment-Based Greencard Application
2007
2002
2000
2000
English
Mandarin