Patent Attorney
Mark John Nahnsen
Reg. No. 51093
Active
Not accepting new clients
Firm
Barnes & Thornburg LLP
Barnes & Thornburg LLP
Location
Chicago, IL 60690-2786
Chicago, IL 60690-2786
Phone
312-357-1313
312-357-1313
Registration Type
ATTORNEY
ATTORNEY
Roster
USPTO OED FY25
USPTO OED FY25
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.