Registered patent agent
Hanchen Liu
Firm
Concord & Sage PC
Address
1360 Valley Vista Dr.
Suite 140
Diamond Bar, CA, 91765
US
Phone
Registered as
Registered patent agent
Other attorneys at Concord & Sage PC
Other patent attorneys in Diamond Bar, California
- Luke J. BurtonUSPTO Reg. 73614
- Che Yang ChenLaw Office of Michael Chen
- Shijia ChenUSPTO Reg. 63449
- Xiangling GaoConcord & Sage, PC
- Zachary A GlantzUSPTO Reg. 68686
- John Adrian PalmerUSPTO Reg. 36885
- Andrew A. PhararPharar Patents & Intellectual Property
- Richard K. SeoUSPTO Reg. 77870
Frequently asked
Frequently asked about Hanchen Liu
Is Hanchen Liu a registered patent attorney?
Hanchen Liu is a registered patent agent (USPTO Registration Number 83900). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Hanchen Liu located?
Hanchen Liu's office is in Diamond Bar, California (91765). Affiliated with Concord & Sage PC.
What firm does Hanchen Liu work at?
Hanchen Liu is listed as affiliated with Concord & Sage PC on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Hanchen Liu?
Hanchen Liu's office phone (per the USPTO public roster) is 619-732-6858. 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.