Geoffrey M. Trachtenberg

Kelsi T. Lane’s practice focuses on probate administration, trust administration, and estate planning. Kelsi is a dedicated attorney practicing estate law. She is focused on ensuring her clients’ legal needs are met with promptness and efficiency. Kelsi is recognized for her expertise by The Best Lawyers in America ©, 2024 and 2025 editions, Super Lawyers ®, 2022, 2023, and 2024 editions, and featured in Phoenix Magazine ’s Top Lawyers in Wills, Trusts, & Estate...

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...

Darren T. Case is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Darren T., 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 Darren T. is held by other top lawyers in the same geographic and legal practice area.

Kurt A. Peterson has practiced in the areas of commercial finance, real estate and general business law for nearly 30 years. His practice is concentrated in commercial and corporate transactions, including complex real estate transactions involving all aspects of acquisition, finance, development, leasing, operation and disposition of commercial, retail, residential, multi-family and agricultural property.Kurt has a broad commercial banking and finance practice, in which he advises banks and ...

Marvin is a partner with substantial experience representing clients in complex commercial litigation in state and federal courts in Arizona and Nevada. His practice primarily focuses on business disputes and litigation, including partnership disputes, real estate litigation, business torts, and fraud claims. Additionally, Marvin has extensive experience litigating debtor/creditor relationships, including prosecuting fraudulent transfer actions and obtaining prejudgment remedies; defending cl...

Mark practices commercial litigation and co-chairs the firm’s appellate practice section, handling civil appeals in the state and federal courts. For 25 years, he has represented clients in a wide variety of areas, including business torts and contracts, securities fraud, trade secrets, employment, professional malpractice, officer and director liability, and real estate litigation. Mark has been named a Best Lawyer by the Best Lawyers in America since 2009 , and is also recognized by A...

Andrew Pappas is a nimble advocate and trusted counselor whose practice focuses on appeals, complex commercial disputes, and governmental and regulatory matters. Before joining Osborn Maledon, Andrew served as general counsel of the Arizona House of Representatives, where he was the principal legal advisor to the Speaker and members of the majority caucus. In that capacity, Andrew provided legal, policy, and strategic advice on a vast range of issues, with a particular focus on elections, red...

Phillip B. Visnansky is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Elder Law and Litigation - Trusts and Estates. Phillip B., 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 Phillip B. is held by other top lawyers in the same geographic and legal practice area.

Rob added to HB's office a built-in mock courtroom, complete with jury box, audio-visual equipment to record witnesses and lawyers, and separate deliberation rooms for two juries. INTRODUCTION Mr. Carey handles various types of injury and consumer claims. Mr. Carey was lead counsel on a jury trial that produced the largest medical-malpractice verdict in 2018, secured class certification in class actions on behalf of consumers and workers where damages are almost $2 billion, and investigated t...

Brian Holohan is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Legal Malpractice Law - Defendants and Litigation - Insurance. Brian, who practices law in Phoenix, Arizona, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brian is held by other top lawyers in the same geographic and legal practice area.