Registered patent attorney

David Howard Carroll

USPTO Reg. 29903

Firm

David H. Carroll LLC

Address

PO Box 1587

Avon, CO, 81620

US

Phone

Registered as

Registered patent attorney

Frequently asked

Frequently asked about David Howard Carroll

  • Is David Howard Carroll a registered patent attorney?

    Yes. David Howard Carroll is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 29903). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is David Howard Carroll located?

    David Howard Carroll's office is in Avon, Colorado (81620). Affiliated with David H. Carroll LLC.

  • What firm does David Howard Carroll work at?

    David Howard Carroll is listed as affiliated with David H. Carroll LLC on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact David Howard Carroll?

    David Howard Carroll's office phone (per the USPTO public roster) is 612-246-3850. 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 18:34 EDT