Registered patent agent
Yu Ching Chang
Address
No. 21, Ln. 26, Ziqiang 2nd Rd.,
Qianjin Dist.,
Kaohsiung City, 801
TW
Phone
Registered as
Registered patent agent
Frequently asked
Frequently asked about Yu Ching Chang
Is Yu Ching Chang a registered patent attorney?
Yu Ching Chang is a registered patent agent (USPTO Registration Number 71339). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
How do I contact Yu Ching Chang?
Yu Ching Chang's office phone (per the USPTO public roster) is 011-886-988717013. 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.