Persoona.ai

Altadena, California

Patent attorneys in Altadena

Altadena, California is home to 6 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include Law Office of Melanie Calvert.

Melanie A Calvert

Reg. 31595
Patent attorney

Law Office of Melanie Calvert

Altadena, CA · 91001

626-497-4543

Brian M. Cook

Reg. 59356
Patent agent

Altadena, CA · 91001

626-794-9284

Gabriel Norden Hanover· II

Reg. 33708
Patent attorney

Altadena, CA · 91001

310-534-0959

Karin Elizabeth Loyola

Reg. 35976
Patent attorney

Altadena, CA · 91001

626-375-6490

Kristin M Petherbridge

Reg. 52117
Patent agent

Altadena, CA · 91001

626-201-7325

Christopher A Richardson

Reg. 68741
Patent attorney

Altadena, CA · 91001

626-222-6176

Common questions

Do patent attorneys in Altadena 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 Altadena tend to track the broader California legal market.
How many USPTO practitioners list a Altadena office?
6 USPTO-registered patent practitioners list a Altadena 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 Altadena practitioner remotely?
Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Altadena-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.
build 4315ed5 · 2026-05-22 19:46 EDT