Registered patent attorney

Donna O. Sai

USPTO Reg. 64086

Address

4831 Emerald Street

Torrance, CA, 90503

US

Phone

Registered as

Registered patent attorney

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Frequently asked

Frequently asked about Donna O. Sai

  • Is Donna O. Sai a registered patent attorney?

    Yes. Donna O. Sai is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 64086). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is Donna O. Sai located?

    Donna O. Sai's office is in Torrance, California (90503).

  • How do I contact Donna O. Sai?

    Donna O. Sai's office phone (per the USPTO public roster) is 310-542-7520. 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.

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