Registered patent attorney
Dutro Evans Campbell
Firm
Campbell IP
Address
4512 West Pine Boulevard
St. Louis, MO, 63108
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Dutro Evans Campbell
Is Dutro Evans Campbell a registered patent attorney?
Yes. Dutro Evans Campbell is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 46239). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Dutro Evans Campbell located?
Dutro Evans Campbell's office is in St. Louis, Missouri (63108). Affiliated with Campbell IP.
What firm does Dutro Evans Campbell work at?
Dutro Evans Campbell is listed as affiliated with Campbell IP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Dutro Evans Campbell?
Dutro Evans Campbell's office phone (per the USPTO public roster) is 636-686-8331. 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.