IP Library
Patent Attorney

Jonathan C Siekmann

Reg. No. 58259
Active
Not accepting new clients
Firm
Level 3 Communications, LLC
Location
Broomfield, CO 80021
Phone
720-888-2140
Registration Type
ATTORNEY
Roster
USPTO OED FY25
Search their patent cases → All cases at Level 3 Communications, LLC
Firm and contact info reflects the FY25 roster (last updated September 25). Attorneys may have changed firms since then — patent filings show their current firm of record.