Patrick "Pat" Derdenger

Roger Cohen has over 40 years’ experience as a business attorney, representing clients in both litigation and transactions. He has a deep knowledge and understanding of commercial law and the litigation process and is a forceful and effective advocate for his clients. Roger’s experience as a transactional attorney adds value in the litigation setting, as he can relate the documentation process to issues that arise in business and commercial disputes. Conversely, his knowledge and ...

Education: University of Arizona College of Law, Tucson, Arizona J.D. - 05/1979 Arizona State University, College of Business, Tempe, Arizona B.S. - 12/1975 Bar Admissions: Arizona, 1979 U.S. District Court District of Arizona, 1979 Professional Associations: Arizona Supreme Court, Commission on Technology, Commissioner, 2015 to 2020 State Bar of Arizona, Real Property Section, Member West Maricopa County Bar Association, Director, 1990 to Present Southwest Valley Chamber of Commerce, Governm...

Ms. Burgess is an experienced trial attorney who emphasizes health care, medical malpractice, product liability, professional liability, employment law, personal injury and municipal liability in her practice. She has tried cases in state and federal courts, on issues ranging from complex medical negligence claims, to police use-of-force and constitutional claims, and has argued appeals in Arizona’s Appellate and Supreme courts, and before the 9th Circuit Court of Appeals. In 2013 she p...

Anthony has practiced law in Arizona for his entire career. Over the 22 years of his practice, he has handled a variety of cases, mainly focusing on situations involving people who have been affected by unfortunate, life-altering injuries. Anthony has represented hundreds of clients who have suffered from catastrophic personal injuries and/or wrongful death tragedies achieving millions of dollars in recoveries over the years.

Nora Jones is a top attorney recognized by Best Lawyers in the practice area(s) of Elder Law, Litigation - Trusts and Estates and Trusts and Estates. Nora, who practices law in Phoenix, Arizona, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nora is held by other top lawyers in the same geographic and legal practice area.

Mr. Clees represents employers throughout the United States in discrimination and wrongful discharge cases and labor relations. He also counsels clients on a wide array of state, federal and tribal compliance laws. Mr. Clees has been singled out by Chambers USA America’s Leading Lawyers as one of the top labor and employment law attorneys in the country for many years in a row and as a Chambers USA Top Leader in his Field. He has been applauded for his “integrity and common sense&...

For more than 25 years, Mark has offered intelligent and persistent advocacy for his clients involved in complex litigation matters. In the process, he has helped clients ranging from the State of Arizona to the Arizona Cardinals achieve their objectives, even when doing so required trips to the court of appeals to confirm correct rulings by a trial court or reverse errant ones. Mark’s thorough analysis of evidence in complex cases often leads to key connections among facts that aid in ...

Bill Maledon is amongst the most esteemed commercial litigation and trial attorneys in Arizona and across the United States, and has built a widely recognized reputation for leading large-scale and complex commercial matters. He is a prominent figure both in federal and state courts, with notable expertise in antitrust, securities, and sports-related matters. He also has extensive experience in handling appellate matters in both federal and state courts and has acted as mediator and arbitrato...

Thomas J. Shorall, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Litigation - Insurance and Personal Injury Litigation - Defendants. Thomas J., who practices law in Phoenix, Arizona, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas J. is held by other top lawyers in the same geographic and legal practice area.

Jon Neumann is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance. Jon, who practices law in Phoenix, Arizona, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jon is held by other top lawyers in the same geographic and legal practice area.