Registered patent agent
Yi-Chung Chang
Address
1468 Dove Lane
Sunnyvale, CA, 94087
US
Registered as
Registered patent agent
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Frequently asked
Frequently asked about Yi-Chung Chang
Is Yi-Chung Chang a registered patent attorney?
Yi-Chung Chang is a registered patent agent (USPTO Registration Number 55051). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Yi-Chung Chang located?
Yi-Chung Chang's office is in Sunnyvale, California (94087).
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.