Patent Agent
Ronald Andrew duBois
Reg. No. 57715
Active
Not accepting new clients
Firm
Patent Portfolio Building, PLLC
Patent Portfolio Building, PLLC
Location
Fredericksburg, VA 22401
Fredericksburg, VA 22401
Phone
540-361-1863 EXT. 128
540-361-1863 EXT. 128
Registration Type
AGENT
AGENT
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.