Registered patent attorney
Sangeun Chang
Address
178 Cherrybrook Lane
Irvine, CA, 92618
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Sangeun Chang
Is Sangeun Chang a registered patent attorney?
Yes. Sangeun Chang is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 78780). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Sangeun Chang located?
Sangeun Chang's office is in Irvine, California (92618).
How do I contact Sangeun Chang?
Sangeun Chang's office phone (per the USPTO public roster) is 312-647-9463. 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.