Patent Agent
Donald John Gerhart
Reg. No. 42572
Active
Not accepting new clients
Firm
Challenger Biosciences
Challenger Biosciences
Location
Eugene, OR 97402
Eugene, OR 97402
Phone
866-606-4126
866-606-4126
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.