Patent Agent
Hsun-Hsien Chang
Reg. No. 73242
Active
Not accepting new clients
Location
Brookline, MA 02445
Brookline, MA 02445
Phone
412-519-4978
412-519-4978
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.