Cathy Dahl

Cathy Dahl




Cathy is an Associate in the Trademark, Copyright + Advertising Group at Dorsey & Whitney, with over 25 years of experience in the intellectual property field. Cathy’s clients appreciate her practical approach to the application of the law and risk assessment in connection with meeting business objectives.

Cathy’s practice is multidimensional across a broad array of industries, including banking/finance, consumer goods, food and beverage, energy/natural resources, entertainment and sports, and medical/healthcare goods and services. Examples of her focus in the fields includes:    

  • trademark clearance and availability opinions (1000s of searches completed); 
  • global and domestic trademark prosecution and maintenance; 
  • providing strategic advice for protecting and enforcing trademark rights on a global basis for large and small portfolios; 
  • negotiating and providing guidance on trademark licensing; 
  • negotiating coexistence agreements; 
  • copyright protection;
  • significant experience in IP transactions and due diligence investigations in mergers & acquisitions; and,  
  • domain name acquisition and enforcement, Uniform Dispute Name Resolution Policy (UDRP) proceedings, takedown notices under the Digital Millennium Copyright Act (DMCA), termination of email accounts and domain names for fraudulent purposes, and other cybersquatting and cyberpiracy issues.  

Cathy is also a regular contributor to Dorsey’s critically-acclaimed IP Blog,, which focuses on legal developments in the world of Trademarks, Copyrights, and Advertising.

Education & Admissions

The George Washington University Law School (J.D., 2006)

St. Olaf College (B.A., 1993)


  • Minnesota


Representative Experience

  • Working with clients on Rebranding Initiatives on a Global Basis
  • Overcoming Office Actions issued by the United States Patent and Trademark Office
  • Closely collaborating with global trademark counsel to meet client trademark portfolio objectives
  • Reviewing and providing feedback to clients on proposed product packaging and related advertising and promotional materials for products and services
  • Working on transactional matters, researching the intellectual property in the transaction and perfecting the transfer of ownership
  • Identifying the potential for and obtaining registered copyright protection for clients
  • Engaging with clients to discuss their objectives at a high level and building a road to meet those objectives

News & Resources


Wavy Baby’s Shoes Not Entitled to Special First Amendment Protections
Parlez-vous Francais? New Language Requirements in Effect in Québec in June 2025
Journey’s Trademark Squabble – Who’s Crying Now?
Coca-Cola – “Thums Down” on Evidence of Damages in Misrepresentation of Source in Cancellation Proceeding with Unresolved Territoriality Tension
“Dark Horse” Copyright Claim Against Katy Perry – Hoofing it on a Stairway to Heaven?
Coca-Cola Successfully Petitions to Cancel Trademark Registrations Based on Misrepresentation of Source
Highlights Part III of the Trademark Modernization Act of 2020: Letters of Protest and Shortened Office Action Response Times
Beyoncé Trademark Case Provides Evidentiary Lessons Before the TTAB
Supreme Court Upholds Registrability of BOOKING.COM Trademark and Rejects Per Se Rule for Generic.Com Trademarks
Are Color Trademarks on Product Packaging Inherently Distinctive?
Slap A Logo On It – The Future of Winning a Design Patent Infringement Claim?
Defending Lack of Reasonable Opportunity of Access in Copyright Infringement Claims – Inference is Insufficient
DuPont Factors of Likely Confusion – Long Term Co-Existence Without Confusion Deserves Consideration by TTAB
Trademark Abandonment – Round Up Your Trademark Use Intentions
Will TTAB’s First Precedential Decision of 2018 Lead to Better Quality Examination of Statements of Use?
TTAB Appeal Fees – Winner Does Not Take All
Booking it to the District Court
Improper Assignment of THE EMERALD CITY Mark – Registration Cancelled in Toto
Supplemental Registrations – Actually Worth a Hill of (Coffee) Beans
Hulk-Sized Damages in Sex Tape Privacy and Publicity Case

News & Press Mentions

Dorsey Nationally Ranked and Named Trademark Law Firm of the Year by "U.S. News – Best Lawyers" Best Law Firms

Legal Writings

  • “Searching to Avoid Disaster,” – Trademark World Magazine, April 2010

Industries & Practices

  • Banking & Financial Institutions
  • Creative Industries
  • Food, Beverage & Agribusiness
  • Healthcare & Life Sciences
  • Intellectual Property
  • Technology
  • Trademark, Copyright + Advertising

Professional & Civic

Professional Achievements

  • Member, International Trademark Association - Law Firm Committee (2024-2025 Term)


Contributed 50+ Pro Bono Hours in 2021 Contributed 50+ Pro Bono Hours in 2020

  • Contributed more than 50 Challenge pro bono hours, 2020-2021

North Star Lawyer logo 

  • MSBA North Star Lawyer, 2016-2020
Cathy Dahl