Registered patent agent
Hsun-Hsien Chang
Address
44 Washington St Unit 201
Brookline, MA, 02445
US
Phone
Registered as
Registered patent agent
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Frequently asked
Frequently asked about Hsun-Hsien Chang
Is Hsun-Hsien Chang a registered patent attorney?
Hsun-Hsien Chang is a registered patent agent (USPTO Registration Number 73242). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Hsun-Hsien Chang located?
Hsun-Hsien Chang's office is in Brookline, Massachusetts (02445).
How do I contact Hsun-Hsien Chang?
Hsun-Hsien Chang's office phone (per the USPTO public roster) is 412-519-4978. Verify availability and intake details directly with the firm before sending privileged materials.
Should I prepare anything before contacting a patent attorney?
Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.
Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.