IP Library
Patent Attorney

Johnathan R Maddox

Reg. No. 60027
Active
Not accepting new clients
Firm
Henson& Efron, P.A.
Location
Minneapolis, MN 55402
Phone
612-252-2871
Registration Type
ATTORNEY
Roster
USPTO OED FY25
Search their patent cases → All cases at Henson& Efron, P.A.
Firm and contact info reflects the FY25 roster (last updated September 25). Attorneys may have changed firms since then — patent filings show their current firm of record.