Patrick "Pat" Derdenger

James is a first-chair trial lawyer with the insight from serving as an Arizona trial judge for more than seven years. He focuses his practice on trial and appellate representation in complex commercial litigation and elections disputes. He also serves as arbitrator, mediator, and special master. Before joining the firm, James served as a judge on the Arizona Superior Court, where he presided over hundreds of jury trials, bench trials, evidentiary hearings, and oral arguments. The civil trial...

Lonnie J. Williams, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Employment Law - Management. Lonnie J., who practices law in Phoenix, Arizona, has been recognized since 1995. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lonnie J. is held by other top lawyers in the same geographic and legal practice area.

Robert A. Royal is a shareholder with the Phoenix law firm of Tiffany & Bosco, P.A., where his practice emphasizes intra-corporate dispute and director, officer and manager liability issues. His practice has been limited to litigation. He has often lectured to Arizona lawyers and others on topics involving litigation issues and litigation skills. His special emphasis involve disputes and litigation between shareholders, directors, officers and managers, has led to Mr. Royal publishing, le...

Matthew Joy is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law, Litigation - Environmental and Natural Resources Law. Matthew, who practices law in Phoenix, Arizona, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew is held by other top lawyers in the same geographic and legal practice area.

Tyler M. Cobb is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Public Finance Law. Tyler M., who practices law in Phoenix, Arizona, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tyler M. is held by other top lawyers in the same geographic and legal practice area.

Helen R. Davis is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Family Law. Helen R., who practices law in Phoenix, Arizona, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Helen R. is held by other top lawyers in the same geographic and legal practice area.

Quinn Williams has represented public and private corporations, entrepreneurs, and investment funds for more than 20 years. Quinn's M&A representations have included both Fortune 500 and middle market companies in technology, retail, media, manufacturing and specialty service industries throughout the United States. As a past board member and general counsel for two Arizona-based public companies, Quinn advises on board governance and compliance matters.

Cole has been practicing law for almost twenty years. His practice area focuses on construction defect, products liability, professional liability, personal injury and general insurance defense litigation. He is an experienced trial attorney representing design professionals including architects and engineers in complex litigation matters and general contractors and subcontractors in complex, multi-party construction matters. Additionally he represents a well-known national corporation in pro...

Scott Rodgers is the President of the firm and head of Osborn Maledon’s employment law practice. Practicing in the employment law arena for more than three decades, Scott has represented management in a broad range of employment litigation including defending claims of harassment, discrimination and retaliation, wrongful termination, defamation, and wage and hour claims. Scott has also successfully defended and prosecuted numerous cases involving non-compete agreements, other restrictiv...

Mr. Cates practices litigation in the areas of medical malpractice defense, personal injury defense, healthcare, and commercial disputes. Mr. Cates represents physicians, hospitals and other healthcare providers in medical malpractice cases, and he has served as trial counsel in numerous medical malpractice jury trials. In addition, he has defended personal injury cases at trial and at arbitration. Mr. Cates also represents physicians and other professionals before their state licensing board...