Registered patent attorney

David S Barnett

USPTO Reg. 42294

Firm

Shaw Pittman LLP

Address

2300 N St., N W

Washington, DC, 20037

US

Phone

Registered as

Registered patent attorney

Other patent attorneys in Washington, District of Columbia

Browse all Washington patent attorneys →

Frequently asked

Frequently asked about David S Barnett

  • Is David S Barnett a registered patent attorney?

    Yes. David S Barnett is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 42294). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is David S Barnett located?

    David S Barnett's office is in Washington, District of Columbia (20037). Affiliated with Shaw Pittman LLP.

  • What firm does David S Barnett work at?

    David S Barnett is listed as affiliated with Shaw Pittman LLP on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact David S Barnett?

    David S Barnett's office phone (per the USPTO public roster) is 202-663-8429. 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 17:55 EDT