ZIP 91311
Patent attorneys in ZIP code 91311 · California
ZIP code 91311 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. Local offices include H F Plus and Dytran Instruments, Inc..
All practitioners
H. Clark Bell
Reg. 40908Patent agent
H F Plus
Chatsworth, CA · 91311
818-882-7811
Pablo E Ferreiro Garcia
Reg. 63454Patent agent
Dytran Instruments, Inc.
Chatsworth, CA · 91311
818-478-0660
Arthur Freilich
Reg. 19281Patent attorney
Freilich, Hornbaker & Rosen
Chatsworth, CA · 91311
818-678-6408
Keith Lowell Johnson
Reg. 34630Patent attorney
Chatsworth, CA · 91311
818-882-3237
Kwangjun Kim
Reg. 43335Patent agent
Benest Law Office PC
Chatsworth, CA · 91311
646-886-2038
Anooj M Patel
Reg. 70365Patent attorney
Chatsworth, CA · 91311
818-256-6586
Svapnaben Patel
Reg. 67671Patent agent
Chatsworth, CA · 91311
818-272-1673
Common questions
Do patent attorneys in ZIP 91311 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 91311 tend to track the broader California legal market.
How many USPTO practitioners list a ZIP 91311 office?
7 USPTO-registered patent practitioners list a ZIP 91311 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 91311 practitioner remotely?
Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A ZIP 91311-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.