#1Andrew A. Pharar (Pharar Patents & Intellectual Property)
Serves this area from Diamond Bar, CA (1 mi)
Patent Attorneys & Agents in Diamond Bar, CA
The top-ranked patent attorneys and agents serving Diamond Bar, CA are Andrew A. Pharar (Pharar Patents & Intellectual Property), Che Yang Chen (Law Office of Michael Chen) and Fei-hung Yang. We list 2859 patent attorneys and agents serving Diamond Bar, CA. 30 of the providers shown match an active record from U.S. Patent and Trademark Office, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Patent Attorneys & Agents serving Diamond Bar, CA (Los Angeles County). 2859 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked patent attorneys and agents for Diamond Bar
#2Che Yang Chen (Law Office of Michael Chen)
Serves this area from Diamond Bar, CA (1 mi)#3Fei-hung Yang
Serves this area from Diamond Bar, CA (1 mi)#4Hanchen Liu (Concord & Sage PC)
Serves this area from Diamond Bar, CA (1 mi)#5John Adrian Palmer
Serves this area from Diamond Bar, CA (1 mi)#6Luke J. Burton
Serves this area from Diamond Bar, CA (1 mi)#7Richard K. Seo
Serves this area from Diamond Bar, CA (1 mi)#8Shijia Chen
Serves this area from Diamond Bar, CA (1 mi)#9Sunyong Tang (Concord & Sage PC)
Serves this area from Diamond Bar, CA (1 mi)#10Wai Tai L. Yip (Nguyen & Yip, P.C.)
Serves this area from Diamond Bar, CA (1 mi)
20 more providers serving this area
- Zachary A Glantz, Diamond Bar, CA (1 mi)
- Austin T Cairns, Walnut, CA (2 mi)
- Billy Y Lau, Walnut, CA (2 mi)
- David Sangchoon Park, Walnut, CA (2 mi)
- Eric W. Chang, Walnut, CA (2 mi)
- Mandana Jafarinejad, Walnut, CA (2 mi)
- Mei Lin Wong, Walnut, CA (2 mi)
- Michael A Lucero, Walnut, CA (2 mi)
- Hsueh-Li Yang, Walnut, CA (3 mi)
- Jerrold Brendan Reilly (Mag Instrument, Inc.), Pomona, CA (5 mi)
- Michael A Brooks, Pomona, CA (5 mi)
- John W Coursen (Structural Composites Industries), Pomona, CA (5 mi)
- Audrey L. Khoo (Chang & Cot?, LLP), Rowland Heights, CA (5 mi)
- Christopher A Michail, Rowland Heights, CA (5 mi)
- Jen-Feng Lee, Rowland Heights, CA (5 mi)
- Jianmin Zhou (Law Offices Of James Zhou), Rowland Heights, CA (5 mi)
- Joseph M Hageman, West Covina, CA (5 mi)
- Songfong T Wang (Wang IP Law Group, P.C.), Rowland Heights, CA (5 mi)
- Didier Capre (Envista), Brea, CA (6 mi)
- Eric T. Syu (NetApp, Inc.), Brea, CA (6 mi)
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Frequently asked questions
How many patent attorneys and agents serve Diamond Bar?
We list 2859 patent attorneys and agents serving Diamond Bar, CA: 0 based there and 2859 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which patent attorneys and agents serve Diamond Bar?
The top-ranked patent attorneys and agents serving Diamond Bar, CA are Andrew A. Pharar (Pharar Patents & Intellectual Property), Che Yang Chen (Law Office of Michael Chen), Fei-hung Yang, Hanchen Liu (Concord & Sage PC) and John Adrian Palmer. The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving Diamond Bar are verified against official records?
10 of the top 10 match an active official record: Andrew A. Pharar (Pharar Patents & Intellectual Property) (U.S. Patent and Trademark Office), Che Yang Chen (Law Office of Michael Chen) (U.S. Patent and Trademark Office), Fei-hung Yang (U.S. Patent and Trademark Office), Hanchen Liu (Concord & Sage PC) (U.S. Patent and Trademark Office) and John Adrian Palmer (U.S. Patent and Trademark Office), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a patent attorney and a patent agent?
Both are registered with the USPTO to prepare and prosecute patent applications. Patent attorneys are also licensed lawyers and can handle litigation and other legal matters; agents cannot.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .