#1Leslie J Lindsay (The Lindsay Law Firm)
Serves this area from Thornton, CO (1 mi)
Patent Attorneys & Agents in Thornton, CO
The top-ranked patent attorneys and agents serving Thornton, CO are Leslie J Lindsay (The Lindsay Law Firm), Charles A. Smith (Oppedahl Patent Law Firm LLC) and William P Gisi. We list 657 patent attorneys and agents serving Thornton, CO. 30 of the providers shown match an active record from U.S. Patent and Trademark Office, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Patent Attorneys & Agents serving Thornton, CO (Adams County). 657 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked patent attorneys and agents for Thornton
#2Charles A. Smith (Oppedahl Patent Law Firm LLC)
Serves this area from Thornton, CO (2 mi)#3William P Gisi
Serves this area from Thornton, CO (2 mi)#4Christopher R. Sylvain (Polson Intellectual Property Law P.C.)
Serves this area from Westminster, CO (3 mi)#5Diane E O'Neil
Serves this area from Westminster, CO (3 mi)#6Edward V Clancy (The Law Office of Edward V. Clancy)
Serves this area from Westminster, CO (3 mi)#7Margaret L Polson (Polson Intellectual Property Law PC)
Serves this area from Westminster, CO (3 mi)#8Michael M Pritzkau (Pritzkau Patent Group, LLC)
Serves this area from Thornton, CO (4 mi)#9Michael T Wiwchar (Helex IP Services LLC)
Serves this area from Thornton, CO (4 mi)#10David J Rodgers
Serves this area from CO
20 more providers serving this area
- David Volejnicek (DMVV LLC), CO
- John C Heuton (Heuton IP Law, LLC), CO
- Lisa A Parmley (Intellectual Properties Enterprises, Inc.), CO
- Mark A Lindner, CO
- Michael J Setter (Setter Roche LLP), CO
- Paik Saber, CO
- Patrick L. Muino (Setter Roche LLP), CO
- Richard P. Koo, CO
- Robert A Bailey (Setter Roche LLP), CO
- Andrew J Kuchinski, Westminster, CO (6 mi)
- Chenyan Wu (Oppedahl Patent Law Firm LLC), Westminster, CO (6 mi)
- John A Wiberg (Klaas, Law, O' Meara & Malkin), Westminster, CO (6 mi)
- Robert Wayne Nelson (Klaas Law O'Meara & Malkin, PC), Westminster, CO (6 mi)
- Sara A Gossman (The Law Office of Sara Gossman), Westminster, CO (6 mi)
- Steven W Strandberg (Strandberg Law Office, P.C.), Westminster, CO (6 mi)
- Aileen Law (Oppedahl Patent Law Firm LLC), Westminster, CO (7 mi)
- Carl Oppedahl (Oppedahl Patent Law Firm LLC), Westminster, CO (7 mi)
- Frank H Thomson, Westminster, CO (7 mi)
- Bret W. Adams (Strategic Patents), Broomfield, CO (7 mi)
- Daniel M Maffeo, Broomfield, CO (7 mi)
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Frequently asked questions
How many patent attorneys and agents serve Thornton?
We list 657 patent attorneys and agents serving Thornton, CO: 0 based there and 657 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which patent attorneys and agents serve Thornton?
The top-ranked patent attorneys and agents serving Thornton, CO are Leslie J Lindsay (The Lindsay Law Firm), Charles A. Smith (Oppedahl Patent Law Firm LLC), William P Gisi, Christopher R. Sylvain (Polson Intellectual Property Law P.C.) and Diane E O'Neil. The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving Thornton are verified against official records?
10 of the top 10 match an active official record: Leslie J Lindsay (The Lindsay Law Firm) (U.S. Patent and Trademark Office), Charles A. Smith (Oppedahl Patent Law Firm LLC) (U.S. Patent and Trademark Office), William P Gisi (U.S. Patent and Trademark Office), Christopher R. Sylvain (Polson Intellectual Property Law P.C.) (U.S. Patent and Trademark Office) and Diane E O'Neil (U.S. Patent and Trademark Office), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a patent attorney and a patent agent?
Both are registered with the USPTO to prepare and prosecute patent applications. Patent attorneys are also licensed lawyers and can handle litigation and other legal matters; agents cannot.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .