Patent Attorney
Heather L Callahan
Reg. No. 43524
Active
Not accepting new clients
Location
Littleton, CO 80120
Littleton, CO 80120
Phone
413-824-2208
413-824-2208
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.