McCallum Law Firm, LLC
- Erie biotechnology and patent law firm.
- http://www.mccallumlaw.net/

Brian D. Smith, PC
- Denver patent trademark firm focusing on patent and trademark infringement.
- http://www.coloradopatents.com/

Oppedahl & Larson LLP
- Intellectual property law firm offering online information, from offices in Dillon.
- http://www.patents.com

Leyendecker Law Offices
- Intellectual property attorney based in Highlands Ranch.
- http://www.leyendeckerlaw.com

Rick Martin
- A small practice based in Longmont. Resources and tips for inventors.
- http://www.patentcolorado.com/

Hanes & Schutz, PC
- Colorado Springs firm, providing domestic and international protection and enforcement of the intellectual property rights of businesses and individuals.
- http://www.hanesschutz.com/

The Posner Law Firm
- Evergreen law office focusing on intellectual property law and appellate practice.
- http://posnerlaw.com