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Practice Areas

  • Branding and Marketing
  • Consumer Products Development
  • Data and Privacy
  • Intellectual Property Litigation
  • Intellectual Property Strategic Counseling
  • Litigation
  • Patents
  • Software Audits
  • Semiconductor
  • Trademark and Trade Dress Litigation
  • Trade Secrets and Unfair Competition

Admissions

  • Arizona
  • District of Columbia
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Court of Appeals, Federal Circuit
  • U.S. District Court, Eastern District of Texas
  • U.S. District Court of Vermont

Isaac S. Crum

Partner

Phone: 602.641.6705
Email: icrum@messner.com
Office: Phoenix

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BackgroundEducation & HonorsAwardsAssociations

Isaac S. Crum is an experienced trial attorney with vast litigation experience, including notable work in complex intellectual property disputes. Through his litigation practice, Isaac protects businesses and their interests, including developing and enforcing intellectual property rights.  His client engagements range from defending startups to Fortune 10 companies in disputes across multiple jurisdictions.

Isaac’s litigation practice blends proactive consulting and advice with practical business-oriented strategies to address today’s challenges in global e-commerce.  He has successfully helped companies protect their brands from knockoffs on platforms such as Amazon, eBay, and Etsy.  He has also defended non-profits seeking to develop their assets, including IP portfolios that support growth, expansion, and the advancement of their mission.

His IP litigation experience includes litigating complex cases involving patents, trademarks, trade dress, copyrights, trade secrets, and unfair competition. He has handled high-stakes patent litigation before the International Trade Commission and in district courts nationwide, as well as defending semiconductor disputes and representing small businesses in trademark and patent disputes. He has also handled trademark opposition proceedings, appeals to the Federal Circuit, and cases before the U.S. Supreme Court.

Isaac’s background in computer engineering provided him with a strong technical foundation for his work. After law school at the University of Arizona, he gained valuable experience at two top international law firms in Washington, D.C., before returning to Arizona to continue his practice and raise his family.

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  • University of Arizona, James E. Rogers College of Law (J.D., 2008)
  • University of Arizona (B.S.C.E., 2003)
    • Major: Computer Engineering
  • Southwest Super Lawyers® – “Rising Star” 2015 – 2021 (Intellectual Property)
  • The Best Lawyers in America®, 2023-2026 (Patent Litigation)
  • Arizona Business Leaders, Law Section, AZ Big Media Award (2025, 2026)
  • Notable Practitioner, IP Stars, Managing IP, Arizona and Nationwide (2024)
  • Arizona State Bar Association Intellectual Property Section, Executive Council
  • American Intellectual Property Law Association, Member
  • Maricopa County Bar Association, Member
  • Pima County Bar Association, Member
Representative Experience
  • Secured a landmark $21M jury verdict for design patent and trademark infringement.
  • Representing a global spirits manufacturer in intellectual property counseling, trademark enforcement, litigation, and appeals.
  • Obtained a multi-hundred-million-dollar award for a plaintiff against a software company for patent infringement.
  • Successfully represented one of the largest spirit brands in the world at trial and before the 9th Circuit and U.S. Supreme Courts.
  • Successfully litigated multi-hundred-million-dollar case on behalf of an Arizona plaintiff against a large pharmaceutical company over gene expression systems and failure to pay
  • Performing ongoing IP clearance work and product development consulting for one of the largest puzzle and game manufacturers in the world.
  • Representing trademark infringement clients around the country and before the United States Patent and Trademark Office.

Learn More About Our Capabilities

We’ve built a team we are proud of.
Learn how we’ve grown over the past 30 years.

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Messner Reeves LLP
1550 Wewatta St. Suite 710
Denver, CO 80202
Phone: (303) 623-1800