Matthew J. Martinez

Meghan heads the firm’s Energy, Water, and Utility Law practice and is a renowned industry leader in the electric, renewable energy, natural gas, water, telecommunications, and other innovative technologies sectors. Her clients value the unique blend of her legal acumen with the substantive utility business knowledge that she developed serving for years as both Associate General Counsel of Regulatory and then as head of the revenue requirement and rate design departments for Arizona&rsq...

Bruce Feder is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: General Practice and Criminal Defense: White-Collar. Bruce, who practices law in Phoenix, Arizona, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Bruce is held by other top lawyers in the same geographic and legal practice area.

Robert C. Ashley is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Litigation - Insurance. Robert C., who practices law in Phoenix, Arizona, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert C. is held by other top lawyers in the same geographic and legal practice area.

Jon is a partner at O'Steen & Harrison, PLC. He joined the firm in 2005 and practices in the areas of personal injury, car accidents, contaminated food, legal malpractice, insurance bad faith, defective products and commercial litigation. He graduated from Occidental College in 2002 (B.A., Economics and Political Science) and the Arizona State University College of Law in 2005 (J.D., cum laude). He served as Senior Articles Editor of the Arizona State Law Journal and was a Willard H. Pedr...

Colin Proksel focuses his practice on complex litigation across a wide set of industries. With over fifteen years of experience, he has a long track record of success representing clients in both state and federal court, alternative dispute resolution processes (including mediation and arbitration), and administrative proceedings. Colin graduated with distinction from the University of Iowa College of Law. Before joining Osborn Maledon, he served as a law clerk to the late Honorable Arthur L....

P. Derek Petersen is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Environmental. P. Derek, who practices law in Phoenix, Arizona, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which P. Derek is held by other top lawyers in the same geographic and legal practice area.

Mark Ogden has litigated more than 500 employment lawsuits to conclusion, mostly in federal court, and has litigated 23 jury trials to verdict. Among his notable litigation successes are cases involving: Discrimination on the basis of religion, age, and disability Breach of contract issues Whistleblower claims He also provides employment training to employers of all sizes and regularly speaks on a variety of topics before a wide range of professional organizations. Mark is co-chair of the fir...

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.

Joe Mais is an experienced trial lawyer who has tried more than 20 jury trials, bench trials and arbitrations. He also has served as lead counsel in many significant matters that were successfully resolved before trial. He has served as lead counsel in a wide range of matters including multiple securities, intellectual property, and consumer actions, as well as contract, business tort and real estate litigation. Joe is currently ranked by Chambers as an Arizona Band One litigator, and describ...

For nearly 30 years, Chris has focused his practice on high-profile civil and criminal environmental investigations and enforcement actions throughout the United States. A nationally-recognized Resource Conservation and Recovery Act (RCRA) practitioner, Chris represents national trade associations, oil and gas companies, manufacturers, and mine operators on issues involving the identification and management of solid and hazardous wastes, financial assurance, corrective action, permitting, boi...