Registered patent attorney
Johnathan R Maddox
Firm
Henson& Efron, P.A.
Address
220 South Sixth Street
Suite 1800
Minneapolis, MN, 55402
US
Phone
Registered as
Registered patent attorney
Other patent attorneys in Minneapolis, Minnesota
- Ross A AbbeyRobins, Kaplan, Miller & Ciresi L.L.P.
- Mark B. AbbottAbbott Systems, Inc.
- James H AckleyCantel Medical
- Matthew W AdamsMRG IP LAW, P.A. DBA Mueting Raasch Group
- John W AlbrechtMedtronic, Inc.
- Philip E. AlfordSchwegman Lundberg & Woessner, P.A.
- Jeffer AliCarlson, Caspers, Vandenburgh, Lindquist & Schuman, P.A.
- Larina A. AltonLewis Brisbois Bisgaard & Smith LLP
Frequently asked
Frequently asked about Johnathan R Maddox
Is Johnathan R Maddox a registered patent attorney?
Yes. Johnathan R Maddox is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 60027). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Johnathan R Maddox located?
Johnathan R Maddox's office is in Minneapolis, Minnesota (55402). Affiliated with Henson& Efron, P.A..
What firm does Johnathan R Maddox work at?
Johnathan R Maddox is listed as affiliated with Henson& Efron, P.A. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Johnathan R Maddox?
Johnathan R Maddox's office phone (per the USPTO public roster) is 612-252-2871. 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.