ZIP 91789
Patent attorneys in ZIP code 91789 · California
ZIP code 91789 in California has 7 USPTO-registered patent practitioners listed at addresses inside the ZIP. Every practitioner shown holds an active license to practice before the US Patent and Trademark Office.
All practitioners
Austin T Cairns
Reg. 75991Patent agent
Walnut, CA · 91789
657-231-2070
Eric W. Chang
Reg. 76511Patent agent
Walnut, CA · 91789
909-576-3023
Mandana Jafarinejad
Reg. 67974Patent attorney
Walnut, CA · 91789
626-379-5490
Billy Y Lau
Reg. 40248Patent agent
Walnut, CA · 91789
626-922-5500
Michael A Lucero
Reg. 80683Patent agent
Walnut, CA · 91789
909-706-5168
David Sangchoon Park
Reg. 52094Patent attorney
Walnut, CA · 91789
Mei Lin Wong
Reg. 66408Patent agent
Walnut, CA · 91789
626-478-8116
Common questions
Do patent attorneys in ZIP 91789 cost more than the national average?
Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in ZIP 91789 tend to track the broader California legal market.
How many USPTO practitioners list a ZIP 91789 office?
7 USPTO-registered patent practitioners list a ZIP 91789 mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.
Can I work with a ZIP 91789 practitioner remotely?
Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A ZIP 91789-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.