Registered patent agent

Liyan Zhu

USPTO Reg. 71580

Firm

Polygon IP, LLP

Address

1255 Treat Blvd

Suite 300

Walnut Creek, CA, 94597

US

Phone

Registered as

Registered patent agent

Other attorneys at Polygon IP, LLP

Other patent attorneys in Walnut Creek, California

Browse all Walnut Creek patent attorneys →

Frequently asked

Frequently asked about Liyan Zhu

  • Is Liyan Zhu a registered patent attorney?

    Liyan Zhu is a registered patent agent (USPTO Registration Number 71580). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.

  • Where is Liyan Zhu located?

    Liyan Zhu's office is in Walnut Creek, California (94597). Affiliated with Polygon IP, LLP.

  • What firm does Liyan Zhu work at?

    Liyan Zhu is listed as affiliated with Polygon IP, LLP on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Liyan Zhu?

    Liyan Zhu's office phone (per the USPTO public roster) is 626-808-5745. 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.

build 4315ed5 · 2026-05-22 18:34 EDT