Registered patent agent
Eric W. Chang
Address
19816 Moon Shadow Cir.
Walnut, CA, 91789
US
Phone
Registered as
Registered patent agent
Frequently asked
Frequently asked about Eric W. Chang
Is Eric W. Chang a registered patent attorney?
Eric W. Chang is a registered patent agent (USPTO Registration Number 76511). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Eric W. Chang located?
Eric W. Chang's office is in Walnut, California (91789).
How do I contact Eric W. Chang?
Eric W. Chang's office phone (per the USPTO public roster) is 909-576-3023. 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.