Slattery Petersen PLLC


About Us

With offices in Phoenix and Tucson, Slattery Petersen PLLC is an active trial litigation boutique law firm that represents clients throughout the State of Arizona and across the country. Above all, we are trial lawyers with experience trying highly technical cases with significant exposure to verdict on a national, regional, and local level. While we approach every case with an eye on trial, many cases do not get that far, which is why we evaluate cases and meet with clients early to best understand what a successful outcome means to our clients. We combine the legal skills and training of a large law firm with the dedication and service of a small boutique to provide our clients with great value.


Slattery Petersen PLLC partners GinaMarie Slattery, Libby Petersen and Brad Petersen all have significant trial practice as lead, first-chair trial attorneys. All three lawyers spent a considerable amount of time as partners with Snell & Wilmer L.L.P. before Slattery Petersen. Together, they spent a combined 45 years at Snell before starting at Slattery Petersen.

In 2015, Jill Covington joined Slattery Petersen PLLC as a partner from another large law firm, Fennemore Craig, P.C., bringing with her a wealth of trial, litigation, and legal experience in the areas of medical negligence, board actions against health care professionals, healthcare law, managed care, and employment law.

In 2021, Dustin Lane and Vernon Marsh joined Slattery Petersen PLLC as partners and opened the firm’s Miami, Florida office. Dustin and Vernon have worked at large, national law firms, where they represented international manufacturers and businesses in product liability and commercial litigation. Dustin also has corporate counsel experience as a former in-house counsel of Volkswagen Group of America and Fiat Chrysler (FCA US LLC).

Slattery Petersen lawyers have been recognized for their achievements by Martindale-Hubbell®, The National Law Journal©, Super Lawyers®, Arizona Business Magazine©, Arizona’s Finest Lawyers, the Arizona Daily Star, and Tucson Hispanic Chamber of Commerce.

Slattery Petersen has significant experience in a number of different practice areas including trials, product liability, medical malpractice, personal injury, and commercial litigation. For more information, please go to Our Practice Areas.


Our clients hire us because they trust us to represent them in high-stakes litigation. We aggressively defend our clients, but we understand that building a long-term, mutually-beneficial attorney-client relationship is more than just providing high-quality work and obtaining favorable results. Value and efficiency are also important. We are large law firm lawyers without the large law firm overhead. Our use of technology, lean staffing, efficient case management, and internal cost structures allow us to charge reasonable rates.


From communications to billing, meeting client expectations is our goal. With various wireless devices for on-the-go communications and remote access to client files, our clients can reach us anytime and we can respond. If a particular attorney is in court and unavailable, our staff are happy to redirect inquiries to other attorneys or let clients know when a specific attorney will respond. We work with our clients to make sure that our billing and reporting arrangements meet expectations and make sense within the context of the client’s business. We have experience with many electronic billing systems and are open and willing to discuss alternative fee and billing arrangements.


Diversity is important to us and our clients particularly when it comes to modern business and jury trials. Slattery Petersen qualifies as a women-owned business.