Sally A. Hasenfratz

Ashley Powell is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Family Law. Ashley, who practices law in Oklahoma City, Oklahoma, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ashley is held by other top lawyers in the same geographic and legal practice area.

Since 2006, I have served as an advisor and legal counsel to individuals and families across a wide geographic region, including communities from Dallas to St. Louis. My practice focuses on Family Law matters, including divorce and child custody disputes that directly affect family relationships, financial stability, and long-term planning. I also represent clients in complex guardianship cases, particularly those involving multi-state or international considerations. Practicing law has been ...

David has significant trial experience with complex commercial, intellectual property, trust and estates, tax, energy, and environmental litigation matters in both state and federal courts. He has successfully tried to verdict complex litigation matters in state and federal courts, and under the rules of the American Arbitration Association. He has successfully argued before state and federal appellate courts. In addition, he has experience with matters before state and federal administrative...

Lori F. Winland is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Lori F., who practices law in Oklahoma City, Oklahoma, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lori F. is held by other top lawyers in the same geographic and legal practice area.

Amy Sherry Fischer is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Product Liability Litigation - Defendants. Amy Sherry, who practices law in Oklahoma City, Oklahoma, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Amy Sherry is held by other top lawyers in the same geographic and legal practice area.

Eric is a partner in the firm's Oklahoma City office and Editor in Chief of CounselorLibrary.com's Spot Delivery publication. He assists national and state banks, savings associations, credit unions, mortgage bankers, other licensed lenders, motor vehicles dealers and automotive finance companies in the development and maintenance of nationwide consumer mortgage and automobile finance programs; online motor vehicle sales programs; litigation funding programs; and electronic payment programs. ...

Melissa began her legal career in-house with a Fortune 500 oil and gas company. Since that time, her practice has focused on oil, gas, and energy law , including the preparation of drilling and division order title opinions across Oklahoma, Texas, and North Dakota. Her work frequently involves the preparation of curative documents, probate-related matters, and support in litigation for oil, gas, and renewable energy clients. In addition to her energy law practice, Melissa represents clients i...

David B. Donchin’s practice includes Insurance Law, Complex Litigation, Personal Injury Law, Products Liability, Employment Law, Environmental Law, and Medical Malpractice. In addition to his legal practice, David has served as an Adjunct Professor for Trial Practice at the University of Oklahoma College of Law and as a member of the faculty of the Southern Region of the National Institute of Trial Advocacy. David served as the Managing Director of Durbin Larimore Bialick from 2014 to 2...

Katherine Taylor Loy has practiced law since 1992 and concentrates on Insurance Law, Litigation, Personal Injury, and Products Liability. She has been admitted to practice in Oklahoma, the U.S. District Court, Eastern, Northern and Western Districts of Oklahoma, the U.S. Court of Appeals, Tenth Circuit, and the U.S. Supreme Court. Katherine belongs to the Oklahoma County and Oklahoma Bar Associations and earned her Juris Doctor from the University of Oklahoma. She graduated with honors as a m...

Mark E. Bialick entered the practice of law in 1981. His practice centers upon complex civil litigation, and, over the course of his nearly forty-year career, Mark has litigated and tried to verdict several of the State of Oklahoma’s seminal cases in the areas of insurance, particularly with respect to the duty of good faith and fair dealing, as well as cases involving catastrophic injuries and wrongful death. In 2006, Mark was inducted as a fellow in the American College of Trial Lawye...