Registered patent agent

Douglas P Brosnan

USPTO Reg. 54616

Address

1420 East Roseville Parkway

Suite 140-107

Roseville, CA, 95661

US

Registered as

Registered patent agent

Other patent attorneys in Roseville, California

Browse all Roseville patent attorneys →

Frequently asked

Frequently asked about Douglas P Brosnan

  • Is Douglas P Brosnan a registered patent attorney?

    Douglas P Brosnan is a registered patent agent (USPTO Registration Number 54616). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.

  • Where is Douglas P Brosnan located?

    Douglas P Brosnan's office is in Roseville, California (95661).

  • 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 15:55 EDT