Susan Stone Rosenfield

Arizona

Fennemore Craig, P.C.
2394 E. Camelback Road
Suite 600
Phoenix, AZ 85016

Tel: 602.916.5317

Email: srosenfield@fennemorelaw.com
Web: www.fennemorelaw.com

Susan Rosenfield is the Chairperson of the intellectual property and IP litigation practice group at Fennemore Craig, where she counsels and assists clients in the adoption, defense and enforcement of patent, trademark, copyright and trade secret rights.

Susan also crafts clients’ website privacy and terms of use policies and advises clients regarding product packaging and labeling to meet the requirements of federal and state regulations and laws. In all aspects of her work, Susan looks for the best ways to identify and protect her clients’ intellectual property and other rights, adding significant value to clients’ businesses. As a registered patent attorney, she has decades of experience in the preparation and prosecution of both patent and trademark applications worldwide, and is adept at putting in place the appropriate contracts to protect and preserve ownership of intellectual property.

Susan’s experience extends to a wide variety of industries, including agriculture, mining, food manufacturing, packaging and distribution, water treatment, pharmaceuticals, dietary supplements, cosmetics, educational training, software, solar energy, telecommunications, construction, financial services, hospitality, restaurants, hotels, entertainment, leisure/recreation, physical fitness and yoga, and equine products and services. She also regularly represents clients in mergers and acquisitions, as well as lenders, such as banks and venture capitalists.

As the daughter of an attorney, Susan has always loved to write, and she worked as a journalist while pursuing her undergrad before committing to the patent law specialty track. She went to law school at night, and worked full time for patent law firms during the day, starting her career in law performing patent and trademark searches. In her current work as an attorney, she enjoys helping her clients advance their business by proactively avoiding problems where possible, and finding practical approaches to solve problems. She firmly believes business owners should focus on running their businesses, as she efficiently manages their intellectual property portfolios and issues.

  • Co-Author, “Preserving A Business’ Competitive Edge: A Practical Guide To IP Protection For Phoenix Entrepreneurs,” Fennemore Article, August 22, 2025
  • Featuring, “Artificial intelligence and the law,” Jewish News, October 18, 2023
  • Featured, “Attorneys help businesses stay on top of social and regulatory changes,” inBusiness, June 2022
  • Panelist, “IP Strategies to Protect Your Business,” Arizona BioPreneur Conference, March 25, 2022
  • Co-Author, “Employee Assignments of Inventions – An Update,” Fennemore Client Alert, August 26, 2021
  • Panelist, “#SCGGlobalSpin?: COVID-19 and Life Sciences, a Global Panel Discussion,” SCG Global Spin, January 25, 2021
  • Co-author, “Ownership of Employee Inventions,” Fennemore Client Alert, January 7, 2020
  • Speaker, “Wild and Domestic Arizona Horses (and Mules),” 2016 Equine Law Summit, March 2016
  • Featured, “Companies to Stop Revenge Makeover Ads Using Ex-Governor,” Washington Times, September 3, 2015

“Clients value her ability to manage complex patent and trademark portfolios efficiently, offering practical guidance that anticipates risks while supporting long-term growth and operational priorities across diverse industries.”
The Patent Lawyers, 2025