Registered patent attorney

William Stephen Foster

USPTO Reg. 51695

Firm

Northrop Grumman Corporation

Address

2980 Fairview Park Dr.

Fall Church, VA, 22042

US

Phone

Registered as

Registered patent attorney

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Frequently asked

Frequently asked about William Stephen Foster

  • Is William Stephen Foster a registered patent attorney?

    Yes. William Stephen Foster is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 51695). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is William Stephen Foster located?

    William Stephen Foster's office is in Fall Church, Virginia (22042). Affiliated with Northrop Grumman Corporation.

  • What firm does William Stephen Foster work at?

    William Stephen Foster is listed as affiliated with Northrop Grumman Corporation on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact William Stephen Foster?

    William Stephen Foster's office phone (per the USPTO public roster) is 703-280-3906. 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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