Patent Attorney
David R. Trossen
Reg. No. 59406
Active
Not accepting new clients
Firm
Knobbe Martens Olson & Bear, LLP
Knobbe Martens Olson & Bear, LLP
Location
San Francisco, CA 94104-4448
San Francisco, CA 94104-4448
Phone
415-954-4114
415-954-4114
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.