• vcard
D 303.583.8212
F 303.572.7883
  • Education
    • J.D., cum laude, University of Toledo College of Law, Law Review, Notes and Comment Editor; Dean's Scholar; Student Bar Association Scholar
    • B.A., The Ohio State University, Sphinx Senior Honor Society; President's Leadership Citation
  • Court Admissions
    • U.S. Court of Appeals, Seventh Circuit
    • U.S. Court of Appeals, Eighth Circuit
    • U.S. District Court, Eastern District of Missouri
    • U.S. District Court, Western District of Missouri
    • U.S. District Court, District of Colorado
    • U.S. District Court, Central District of Illinois
    • U.S. District Court, Northern District of Illinois
    • U.S. District Court, Southern District of Illinois
    • U.S. District Court, Eastern District of Texas
    • U.S. Tax Court
Recognized by the National Law Journal as an "Intellectual Property Trailblazer," an award given to only 50 lawyers annually, as well as by Super Lawyers (an honor given to less than 5 percent of lawyers) for Intellectual Property Litigation, Jeffrey Kass focuses his practice on providing clients with intellectual property, commercial litigation and business counsel. 

Jeffrey is a trial lawyer focusing on trademark, patent, trade secrets, and copyright litigation, as well as technology law, business and commercial disputes. Jeffrey’s practice also focuses on contract issues, licensing, Internet domain name disputes and related areas of law. He has handled preliminary injunctions and temporary restraining orders, jury and non-jury trials in federal and state courts, and disputes before the U.S. Patent & Trademark Office. Jeffrey has secured multiple intellectual property victories in federal court, including winning a significant trademark jury trial in 2009, winning a complex copyright infringement jury trial in 2015, and obtaining dismissal of two high-profile trademark lawsuits in 2012 and 2013. Also in 2013, his efforts led to a favorable settlement in a high-profile patent case for less than one percent of the amount sought by the plaintiff. In 2014, he obtained a favorable settlement in a significant copyright infringement case.  In 2016, Jeffrey obtained summary judgment of non-infringement in a patent case involving computer equipment.

Jeffrey also provides expert witness opinions in trademark and unfair competition cases. He advises companies on various business planning issues, and he is general counsel to numerous startup and emerging companies across the country. Small Business Monthly named Jeffrey one of the Top 10 lawyers for entrepreneurs.

Jeffrey is also a lead attorney of Polsinelli's Natural and Organic Foods and Products practice where he advises companies on a wide range of issues facing that industry. He also has significant experience in the vehicle service contract, advertising, apparel, luggage and consumer electronics areas.

In addition, he is the author of numerous articles and he has given many presentations to businesses and lawyers on a wide range of intellectual property litigation and business related topics. Jeffrey also is an adjunct law professor teaching intellectual property litigation, and he is active in Startup Colorado and a sponsor and judge for the City of Denver's Business Plan Competition, among many other commitments to professional and community service.
  • Represented one of the largest retailers in the U.S. in a patent infringement case involving computer equipment. Obtained summary judgment of non-infringement for the client.
  • Represented U2logic in copyright litigation over software code. Successfully tried case to a jury and obtained favorable verdict for U2logic.
  • Represented multiple companies in cases involving keyword advertising and trademark infringement that resulted in cessation of keyword advertising campaigns. Companies sometimes purchase keywords on Internet search engines so that their advertisements display as sponsored links in search results when the keyword is searched. Some companies buy competitors’ trademarks as keywords. Successfully stopped several of such campaigns.
  • Represented Primal Wear in copyright litigation over its cycling jersey designs. Case settled favorably for client. 
  • Represented major computer company in patent litigation involving cases for computer tablets. After markman briefing, case settled for less than one percent sought by plaintiff.
  • Represented bebe, inc. as second chair trial attorney in lawsuit filed against The May Company over use of the mark “be” in connection with women’s clothing. After a bench trial on whether to issue an injunction, the court entered an order requiring defendant to cease all use of the infringing mark. This was a high-profile case in the apparel industry.
  • Represented Fuse Advertising as first chair trial attorney in trademark lawsuit filed by the owner of the federally registered mark “Fuse,” which the client had used in connection with advertising services. Despite identical marks in the same industry, the court refused to order Fuse to cease using the same mark.
  • Represented Just Enterprises as first chair trial attorney in jury trial over the mark 1-800-JUSTICE. Jury found defendant to willfully infringe the client’s mark, and the court subsequently entered an award of enhanced damages and attorneys’ fees. The main issue in the case was whether the mark 1-800-JUSTICE was descriptive of legal services.
  • Represented American Racing Equipment in trademark litigation that was resolved in favor of our client and resulted in cessation of use of the mark in question following extended litigation and discovery. The issue in the case related to use of a surname mark.
  • Represented luggage company in patent litigation that resulted in multiple favorable settlements obtained against competitors using luggage features subject to utility and design patents. Successfully removed from the market more than 12 different infringing competitor pieces of luggage containing the feature.
  • Represented Barker Company in design patent infringement litigation that, following extended discovery, a motion for summary judgment and a motion for sanctions, ended with plaintiff voluntarily dismissing its case against the client with prejudice. The case involved certain cases used by grocery stores to display flowers.
  • Represented Bonita Bay in trademark litigation that ended in the defendant ceasing from its use of the mark after extended discovery and expert survey results. Bonita Bay owned its mark in connection with golf communities and real estate. Defendant was using a similar mark in connection with a medical practice.
  • Represented maker of camping equipment in patent litigation involving camping and kitchen equipment. After favorable Markman ruling, client was permitted to continue making its camping and kitchen equipment.
  • Represented publisher in a trademark infringement matter in the food industry in which we obtained dismissal of the complaint based on lack of use of the alleged mark as an actual trademark, fair use and other matters.
Case Study Case Studies
September 8, 2016
Publications & Presentations
Intellectual Property Issues for Entrepreneurs
The Commons on Champa, Campus for Entrepreneurship
May 2016
Publications & Presentations
Trademark Litigation Bootcamp for Young Lawyers
Nashville, TN
May 2016
Publications & Presentations
June 25, 2015
Publications & Presentations
Patent Trolls
Business Law Institute
Denver, CO
Summer 2015
Publications & Presentations
The Top 10 Intellectual Property Issues Every CEO Should Know
University of Colorado, Denver Business School
Denver Startup Week
2014, 2015
podcast icon Podcasts
September 17, 2012
Publications & Presentations
Startup Denver
April 5, 2012
Publications & Presentations
Startup Denver
April 5, 2012
Publications & Presentations
Startup Denver
April 5, 2012
Related News