Registered patent attorney

Jonathan C Siekmann

USPTO Reg. 58259

Firm

Level 3 Communications, LLC

Address

1025 Eldorado Blvd.

Broomfield, CO, 80021

US

Phone

Registered as

Registered patent attorney

Other patent attorneys in Broomfield, Colorado

Browse all Broomfield patent attorneys →

Frequently asked

Frequently asked about Jonathan C Siekmann

  • Is Jonathan C Siekmann a registered patent attorney?

    Yes. Jonathan C Siekmann is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 58259). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is Jonathan C Siekmann located?

    Jonathan C Siekmann's office is in Broomfield, Colorado (80021). Affiliated with Level 3 Communications, LLC.

  • What firm does Jonathan C Siekmann work at?

    Jonathan C Siekmann is listed as affiliated with Level 3 Communications, LLC on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Jonathan C Siekmann?

    Jonathan C Siekmann's office phone (per the USPTO public roster) is 720-888-2140. 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 15:10 EDT