Registered patent attorney

Pier D DeRoo

USPTO Reg. 69340

Firm

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Address

901 New York Avenue, NW

Washington, DC, 20001

US

Phone

Registered as

Registered patent attorney

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Frequently asked

Frequently asked about Pier D DeRoo

  • Is Pier D DeRoo a registered patent attorney?

    Yes. Pier D DeRoo is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 69340). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is Pier D DeRoo located?

    Pier D DeRoo's office is in Washington, District of Columbia (20001). Affiliated with Finnegan, Henderson, Farabow, Garrett & Dunner, LLP.

  • What firm does Pier D DeRoo work at?

    Pier D DeRoo is listed as affiliated with Finnegan, Henderson, Farabow, Garrett & Dunner, LLP on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Pier D DeRoo?

    Pier D DeRoo's office phone (per the USPTO public roster) is 202-408-4000. 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.

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