Mangmang Cai
About Mangmang
Biography
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.
Practice Areas
1
Practice Area
18 years
Fees and Rates
Cost
Sometimes
Payment Methods
- Cash
- Check
- Credit Card
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Chat withLicenses
Licensed in District of Columbia for 16 years
State: District of Columbia
Acquired: 2009
No misconduct found
Licensed in Virginia for 17 years
State: Virginia
Acquired: 2008
No misconduct found
Location
New Weiming Law Group, PLLC
7925 Jones Branch Drive, Suite 5150, Tysons, VA, 22102
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Mangmang Cai's Reviews
Avvo Review Score
252 Client Reviews
Showing 1 - 5 of 121 reviews | Practice Area Knowledge
Posted by Myurajan | March 02, 2026 | Hired Attorney | Immigration
EB-2 NIW Green Card
Mr. Mangmang Cai and his team helped and supported me with my EB-2 NIW application (I-140, I-485, I-765), for which I received approval and my Green Card. I highly recommend this expert team of professionals.
Posted by anonymous | February 16, 2026 | Hired Attorney | Immigration
Professional attorney with great expertise and efficiency
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 09, 2026 | Hired Attorney | Immigration
Great Service
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 | August 18, 2025 | Hired Attorney | Immigration
Professional Service for My NIW I-140, I-485, and Two H-1B Extension Petitions
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 Shun | February 22, 2025 | Hired Attorney | Immigration
Effective and affordable
I was introduced to Mangmang Cai by my close friends because they have managed to get their Green Cards by working with New Weiming Law Group. My professional background is a mix of academia and industry. I was not sure how my credentials can meet the USCIS' requirements initially. Luckily, I have ...
Mangmang Cai's Lawyer Endorsements
"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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This attorney hasn't created any attorney endorsements recently on Avvo.
Experience
Honors
2005
Top 0.1% in LSAT, Law School Admission Council (LSAC)
1991
First Prize, Chemistry Competition, Education System in China
Work Experience
2009 - Present
Attorney, New Weiming Law Group
Associations
2017 - Present
American Immigration Lawyers AssociationMember
2008 - Present
Virginia State BarMember
Sample of Legal Cases
Mostly approved. See https://nwmlaw.com/approvals/casesummaries
Education
2008
J.D.
2001
Ph.D.
N/A
BS - Bachelor of Science
Speaking Engagements
2019
Current Trends and New Developments in Employment-Based Greencard Application
Publications
2007
2002
2000
2000
Languages
English
Mandarin