Patent Attorney
Denis A Berntsen
Reg. No. 26707
Active
Not accepting new clients
Location
Chicago, IL 60657
Chicago, IL 60657
Phone
312-671-2813
312-671-2813
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.