He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me.
-Thomas Jefferson, Selected Writings



Dan focuses his practice in intellectual property, including all aspects of patents, trademarks, copyrights, and trade secrets, as well as related contracts and litigation.

He has wide-ranging experience in the following areas: semiconductors (IC devices and memories, including new semiconductor materials, processes, equipment and process chemicals); optics (including holography, spectrophotometry, ellipsometry, particle counters and laser printers); biotech (including attenuated viruses, DNA, immunological bioassays, nutritional supplements, anticancer drugs, topical medicines, biofeedback devices, medical devices, and proteins); filtration and purification systems; telecommunications (including e-commerce business methods, Internet systems and optical switches); flow metering equipment and processes; mechanical devices; trademarks (including all aspects of prosecution, opposition, policing and enforcement); patent opinion work (including numerous infringement, non-infringement and invalidity opinions); and licensing.

Prior to practicing law, Dan served as senior engineer for Tenneco Oil Company in Houston, Texas.


  • J.D., University of Kansas School of Law
  • B.S., Texas A&M University

Areas Of Practice

We are poised and ready for the next revolution in the legal industry:
blockchain technology.

Create. Protect. Thrive.

Your Technology and Intellectual Property Assets Are The Lifeblood Of Your Business: We Partner With You To Protect Your Critical IP —and To Identify and Implement IP Strategies To Help You Thrive.

We have over 130 years of experience representing clients in minerals development.  

Awards and Honors

  • Best Lawyers in America®Litigation – Intellectual Property, Trademark Law, 2020-2022
  • Listed, IP Stars, Managing Intellectual Property Magazine, 2016

Articles and Presentations

  • Speaker, “Intellectual Property Rights and Remedies After a Trade Show and Lessons Learned,” Intellectual Property Rights Enforcement at Trade Shows, October 4, 2018
  • Interview, “How Exhibitors Can Protect Their Intellectual Property at Trade Shows,” TSNN, July 18, 2018
  • Speaker, “Patent Enforcement: Strategies and Cost Options,” AUTM Annual Meeting, February 21, 2018
  • Author, “Patent Noninfringement, Pre- and Post-Halo,” Law Week Colorado, April 3, 2017

Professional and community activities

  • Chairman, Boulder County Patent Bar Section, Colorado Bar Association
  • Member, Kansas Bar Association
  • Member, International Trademark Association
  • Member, American Intellectual Property Association
  • Registered Professional Engineer, Texas
  • Past Chairman, Patent Bar Section, The Kansas City Metropolitan Bar Association


  • Colorado
  • Missouri
  • U.S. Patent and Trademark Office