McKay Worthington
Partner
Scottsdale Office
8800 East Raintree Drive, Suite 100
Scottsdale, Arizona 85260
McKay Worthington is a partner in the Scottsdale hub of Quintairos, Prieto, Wood & Boyer, P.A., bringing over two decades of experience in litigating multifaceted professional liability, corporate governance, business and commercial litigation, administrative law, misrepresentation, and breach of contract claims. His strategic approach to case management, including the development of innovative litigation strategies and anticipation of opposing counsel's actions, has consistently led to favorable outcomes for his clients.
Mr. Worthington's expertise in complex litigation and case management began in 1997 when he joined a prominent Phoenix law firm as an Associate. As his practice evolved, he became a trusted partner, leading teams of attorneys, paralegals, and support staff through all stages of litigation—from pre-complaint to trial. His extensive experience includes written and document discovery, expert-opinion development, legal research and writing, witness preparation, depositions, oral arguments, and trial work. Additionally, he has played a significant role in administrative functions, such as hiring, litigation training, education programs, and mentoring initiatives.
Before joining QPWB, Mr. Worthington was a Partner at an AmLaw Top 100 Arizona firm, where he handled high-stakes business, government, and administrative law cases. He managed a range of commercial disputes, including contract, tort, and statutory claims, from pre-litigation through appeals, and conducted numerous depositions, oral arguments, appellate proceedings, and jury trials.
Mr. Worthington earned his bachelor's degree in political science from the University of Utah in 1994 and went on to obtain his Juris Doctor from Columbia University School of Law. During his time at Columbia, he contributed to the Columbia Business Law Review, publishing a notable article titled: Is Your Government Contract Worth the Paper It Is Written On? An Examination of Winstar v. United States.
He is licensed to practice law in Arizona and is an active member of the American Bar Association, Maricopa County Bar Association, and the Thurgood Marshall Inn of Court.
Representative Cases
- craigslist Inc. v. eBay Inc., Superior Court of California, County of San Francisco
- eBay Domestic Holdings Inc. v. Craig Newmark, et al., Court of Chancery of Delaware
- AMD, Inc. v. Intel Corporation, U.S. District Court for the District of Delaware
- Case filed against Am Law 100 law firm, U.S. District Court for the District of Arizona
- Case filed against Southwest law firm, U.S. District Court for the District of Arizona
- In the Matter of Coopers & Lybrand LLP, State Board of Accountancy of Arizona
- In the Matter of Touche Ross & Company, State Board of Accountancy of Arizona
- Integrated Information Systems Inc. v. Oracle Corporation, Superior Court of Arizona, Maricopa County
- The Pinal Creek Group, et al. v. Newmont Mining Corporation, et al., U.S. District Court for the District of Arizona, U.S. Court ofAppeals for the Ninth Circuit
- Standard Chartered PLC v. Price-Waterhouse LLP, Superior Court of Arizona, Maricopa County, Arizona Court of Appeals
- Unitech Industries Inc. v. Coopers & Lybrand, L.L.P., Superior Court of Arizona, Maricopa County
- Borowsky v. Brooks, Superior Court of Arizona, Maricopa County
- Turley v. Beus, Superior Court of Arizona, Maricopa County