Registered patent agent

Phillip W Citroen

USPTO Reg. 66541

Firm

Paul Hastings

Address

875 15th Street, N.W.

Washington, DC, 20005

US

Phone

Registered as

Registered patent agent

Other attorneys at Paul Hastings

Other patent attorneys in Washington, District of Columbia

Browse all Washington patent attorneys →

Frequently asked

Frequently asked about Phillip W Citroen

  • Is Phillip W Citroen a registered patent attorney?

    Phillip W Citroen is a registered patent agent (USPTO Registration Number 66541). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.

  • Where is Phillip W Citroen located?

    Phillip W Citroen's office is in Washington, District of Columbia (20005). Affiliated with Paul Hastings.

  • What firm does Phillip W Citroen work at?

    Phillip W Citroen is listed as affiliated with Paul Hastings on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Phillip W Citroen?

    Phillip W Citroen's office phone (per the USPTO public roster) is 202-551-1991. 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 22:45 EDT