Registered patent agent

Donna J Gressler

USPTO Reg. 45544

Firm

Gilead Sciences, Inc.

Address

333 Lakeside Drive

Foster City, CA, 94404

US

Phone

Registered as

Registered patent agent

Other attorneys at Gilead Sciences, Inc.

Other patent attorneys in Foster City, California

Browse all Foster City patent attorneys →

Frequently asked

Frequently asked about Donna J Gressler

  • Is Donna J Gressler a registered patent attorney?

    Donna J Gressler is a registered patent agent (USPTO Registration Number 45544). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.

  • Where is Donna J Gressler located?

    Donna J Gressler's office is in Foster City, California (94404). Affiliated with Gilead Sciences, Inc..

  • What firm does Donna J Gressler work at?

    Donna J Gressler is listed as affiliated with Gilead Sciences, Inc. on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Donna J Gressler?

    Donna J Gressler's office phone (per the USPTO public roster) is 650-653-9470. 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 17:20 EDT