William D. "Bill" Beyer

With over 30 years of experience, Jim litigates negligence, product liability, toxic tort, employer intentional tort, insurance, commercial, and construction related claims in federal and state trial courts, as well as state appellate court. His liability defense concentration includes personal injury, property damage, construction defects, product liability, and general litigation. Jim has achieved the highest ranking, AV Preeminent®, from Martindale-Hubbell® and has been listed as a...

Mr. Boyko is an experienced attorney who practices in the areas of business and real estate law as well as probate and estate planning . He previously served as managing partner of the law firm of Boyko, Dobeck & Weaver before joining Mansour Gavin in late 2016. He is currently admitted to practice law in both the State of Ohio and the State of Florida, as well as the United States District Court, Northern District of Ohio. Tim represents individuals, companies, and non-profit organizatio...

Donald Switzer (Of Counsel) is one of the founders of the firm. He has devoted his practice almost exclusively to the defense of physicians, hospitals and other healthcare professionals for over thirty years. Mr. Switzer’s caseload frequently consists of many high profile and high exposure lawsuits, including wrongful death, quadriplegia and other neurological impairments and cases involving significant economic damages. He has successfully defended physicians and hospitals in many coun...

As an elected Fellow of the American College of Trust and Estate Counsel (ACTEC), Kyle has years of experience counseling multi-generational families, business owners, fiduciaries, entities, family offices and beneficiaries regarding: Administration of estates and trusts (including tax compliance, selection of investment counsel, discretionary distributions and fiduciary accountings) Asset protection and titling Beneficiary representation Business succession Charitable giving (including priva...

William A. Doyle is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Real Estate. William A., who practices law in Cleveland, Ohio, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William A. is held by other top lawyers in the same geographic and legal practice area.

John Q. Lewis is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. John Q., who practices law in Cleveland, Ohio, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John Q. is held by other top lawyers in the same geographic and legal practice area.

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Daniela Paez is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Daniela, who practices law in Cleveland, Ohio, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniela is held by other top lawyers in the same geographic and legal practice area.

Lawrence C. Davison is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Employment Law - Management. Lawrence C., who practices law in Cleveland, Ohio, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lawrence C. is held by other top lawyers in the same geographic and legal practice area.

Warren Goldenberg, Senior Counsel at Hahn Loeser’s Cleveland office, is the President and Chief Operating Officer of KeborMed Inc. (www.kebormed.com), a Platform-as-a-Service for cloud connected medical devices. KeborMed is an early revenue company which has a strategic marketing alliance with Ximedica. After more than 30 years as a Partner at Hahn Loeser, Warren became Senior Counsel on September 1, 2021 in connection with closing of KeborMed’s Series Seed financing so that he co...