Registered patent attorney
Mark Chao
Address
5 Surrey Brook Plaza #1914
Sauk Village, IL, 60411-7300
US
Phone
Registered as
Registered patent attorney
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Frequently asked about Mark Chao
Is Mark Chao a registered patent attorney?
Yes. Mark Chao is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 37293). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Mark Chao located?
Mark Chao's office is in Sauk Village, Illinois (60411-7300).
How do I contact Mark Chao?
Mark Chao's office phone (per the USPTO public roster) is 847-920-4929. 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.