#1James G Warren (P.K. Schrieffer LLP)
Serves this area from West Covina, CA (1 mi)
Patent Attorneys & Agents in West Covina, CA
The top-ranked patent attorneys and agents serving West Covina, CA are James G Warren (P.K. Schrieffer LLP), James M Slominski (Law Office) and Joe Nieh. We list 2859 patent attorneys and agents serving West Covina, 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 West Covina, 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 West Covina
#2James M Slominski (Law Office)
Serves this area from West Covina, CA (1 mi)#3Joe Nieh
Serves this area from West Covina, CA (1 mi)#4Shihning Wang (Premium Attorneys-at-Law)
Serves this area from West Covina, CA (2 mi)#5Joseph M Hageman
Serves this area from West Covina, CA (2 mi)#6Diane L Gardner (Mastermind IP Law P.C.)
Serves this area from Covina, CA (2 mi)#7Panqing He (ChemEOR, Inc.)
Serves this area from Covina, CA (3 mi)#8Hsueh-Li Yang
Serves this area from Walnut, CA (3 mi)#9David C Kao
Serves this area from CA#10Austin T Cairns
Serves this area from Walnut, CA (4 mi)
20 more providers serving this area
- Billy Y Lau, Walnut, CA (4 mi)
- David Sangchoon Park, Walnut, CA (4 mi)
- Eric W. Chang, Walnut, CA (4 mi)
- Mandana Jafarinejad, Walnut, CA (4 mi)
- Mei Lin Wong, Walnut, CA (4 mi)
- Michael A Lucero, Walnut, CA (4 mi)
- Antonio D Quirante, Baldwin Park, CA (4 mi)
- Alyson C Fuller (Prolacta Bioscience), Avocado Heights, CA (5 mi)
- Angela C Huang, Hacienda Heights, CA (5 mi)
- George Ning Chu, Hacienda Heights, CA (5 mi)
- Ida C Shum, Hacienda Heights, CA (5 mi)
- Kenton B Abel, Hacienda Heights, CA (5 mi)
- Michael D. Mendoza, Hacienda Heights, CA (5 mi)
- Michael Ni, Hacienda Heights, CA (5 mi)
- Wen Liu (LIU & LIU), Hacienda Heights, CA (5 mi)
- William D. Bowen (Law Offices of William D. Bowen), Hacienda Heights, CA (5 mi)
- Yinhang Sun, Hacienda Heights, 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)
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Frequently asked questions
How many patent attorneys and agents serve West Covina?
We list 2859 patent attorneys and agents serving West Covina, 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 West Covina?
The top-ranked patent attorneys and agents serving West Covina, CA are James G Warren (P.K. Schrieffer LLP), James M Slominski (Law Office), Joe Nieh, Shihning Wang (Premium Attorneys-at-Law) and Joseph M Hageman. The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving West Covina are verified against official records?
10 of the top 10 match an active official record: James G Warren (P.K. Schrieffer LLP) (U.S. Patent and Trademark Office), James M Slominski (Law Office) (U.S. Patent and Trademark Office), Joe Nieh (U.S. Patent and Trademark Office), Shihning Wang (Premium Attorneys-at-Law) (U.S. Patent and Trademark Office) and Joseph M Hageman (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 .