Robert F. Roos

Scott B. Cohen is a Phoenix based commercial bankruptcy attorney who represents banks, lenders, landlords, guarantors, committees, and other creditors in bankruptcy, creditors’rights matters, loan workouts, business turnarounds, Chapter 11 reorganizations, receiverships, bankruptcy litigation, and commercial litigation. He regularly appears in U.S. Bankruptcy Court and state court proceedings involving liquidations, Chapter 11 reorganizations, receiverships, and commercial lawsuits. Sco...

Kortney’s practice focuses on commercial bankruptcy and business law. This includes contracts, transactions, litigation, and settlement resolution. She is also a skilled mediator and settlement advocate.

Colin was appointed a Judge of the Maricopa County Superior Court in 1990 after twelve years of practicing both civil and criminal trial law. During his 17 years as a Judge, he sat on assignments related to nearly every area of law including civil, criminal, juvenile, and family matters. He was Presiding Judge from 2000 to 2005. After his retirement from the Bench, Colin returned to Osborn Maledon in 2007 where he maintains an active personal injury tort, commercial litigation, and public law...

Scott Erickson is an AV-rated Certified Specialist in Estate and Trust Law and a past chair of the State Bar of Arizona's Estate and Trust Advisory Commission, which assists the Arizona Board of Legal Specialization in the certification of estate and trust law practitioners. A partner at Frazer Ryan, Scott has an estate planning practice encompassing asset protection planning, business succession planning, charitable gift planning, pre-marital planning, probate and trust administration, busin...

Kevin practices in the area of civil litigation, with an emphasis on aviation law, commercial litigation, medical malpractice, product liability, wrongful death and personal injury. Kevin has handled cases for clients in some of the largest lawsuits litigated in Arizona. He represents clients in claims and suits arising out of a variety of issues. Kevin is a trial lawyer with over 25 years of experience before judges, juries and arbitrators. Although he has tried many cases, Kevin focuses on ...

Lee practices environmental law relating to water quality, water rights, environmental compliance auditing, solid and hazardous waste, mining and mined land reclamation and remediation, toxic substances and Superfund matters. With nearly 25 years experience, Lee has a nationally-recognized water quality practice and works closely with his clients on the federal, state and local levels to develop workable strategies to promote development and expansion of both industrial and mining operations....

Erin F. Dunlap is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative / Regulatory Law. Erin F., 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 Erin F. is held by other top lawyers in the same geographic and legal practice area.

A Certified Tax Law Specialist, Best Lawyers ® honoree, CPA, and senior partner in the firm, Brandon Keim combines litigation experience and a strong understanding of accounting and business concepts in tax matters to represent clients in defense of taxing authorities and provide strategic tax advice before a dispute arises. Brandon joined Frazer Ryan after serving as a senior trial attorney with the Internal Revenue Service. At the IRS, he received the Chief Counsel National Award for Su...

Mr. Ambrose is an accomplished trial attorney, having litigated hundreds of complex personal injury and commercial matters in State and Federal Court. His practice focuses primarily on Medical Malpractice, Personal Injury, Insurance Bad Faith, Civil Rights, and Wrongful Death matters. Scott has obtained many multi-million dollar settlements on behalf of his clients. For thirty years his practice has emphasized the litigation and resolution of matters involving catastrophic injury, wrongful de...

Walter Howl is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Real Estate Law. Walter, 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 Walter is held by other top lawyers in the same geographic and legal practice area.