Patent Attorney
Jon P Christensen
Reg. No. 34137
Active
Not accepting new clients
Firm
Welsh Husch Blackwellm LLC
Welsh Husch Blackwellm LLC
Location
Chicago, IL 60606
Chicago, IL 60606
Phone
312-526-1500
312-526-1500
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.