Registered patent attorney

James W Ambrosius

USPTO Reg. 27705

Firm

Ecotech Law Group, P.C.

Address

333 1st Street, Suite C

San Francisco, CA, 94105

US

Phone

Registered as

Registered patent attorney

Other attorneys at Ecotech Law Group, P.C.

Other patent attorneys in San Francisco, California

Browse all San Francisco patent attorneys →

Frequently asked

Frequently asked about James W Ambrosius

  • Is James W Ambrosius a registered patent attorney?

    Yes. James W Ambrosius is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 27705). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is James W Ambrosius located?

    James W Ambrosius's office is in San Francisco, California (94105). Affiliated with Ecotech Law Group, P.C..

  • What firm does James W Ambrosius work at?

    James W Ambrosius is listed as affiliated with Ecotech Law Group, P.C. on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact James W Ambrosius?

    James W Ambrosius's office phone (per the USPTO public roster) is 925-786-1291. Verify availability and intake details directly with the firm before sending privileged materials.

  • Should I prepare anything before contacting a patent attorney?

    Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.

Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.

build 4315ed5 · 2026-05-22 15:14 EDT