Allyson O' Keefe

Ashton Bizzarri is a Partner in the Firm’s Trusts & Estates Practice Group. She focuses her practice in the areas of estate planning and trust and estate administration, while also representing clients in trust and estate litigation. Prior to joining the Firm, Ashton was an Associate Attorney at two Akron law firms, focusing exclusively on estate planning and trust and estate administration. She was also a Trust Officer at Key Private Bank, where she handled trust administrations, w...

Paul J. Schumacher is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Defendants and Product Liability Litigation - Defendants. Paul J., who practices law in Cleveland, Ohio, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul J. is held by other top lawyers in the same geographic and legal practice area.

Chuck Adler joined the Firm in 1993 and became a Partner in 1995. He has a special interest in planning for individuals, families, and closely held businesses. Chuck counsels individuals and families on complex estate, charitable, financial, and retirement planning matters; on estate, gift, and generation-skipping taxes; and on the organization and operation of private foundations. He also works with owners of closely held and family businesses on succession planning. Before joining the Firm,...

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

Andrew has a history of representing corporate clients in sophisticated, complex, and sensitive matters in a wide variety of industries and disciplines. He has tried cases to verdict in Ohio, Florida, and California and has served as lead appellate counsel in the defense of a class certification denial. For the past 15 years, however, his focus has been in spearheading insurance recoveries for corporate policyholders in a variety of business sectors, under various state and international laws...

Corey N. Thrush is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Corey N., 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 Corey N. is held by other top lawyers in the same geographic and legal practice area.

Irving H. Berliner is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Gaming Law and Securities / Capital Markets Law. Irving H., who practices law in Cleveland, Ohio, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Irving H. is held by other top lawyers in the same geographic and legal practice area.

Lawrence E. Oscar, former CEO and managing partner of Hahn Loeser & Parks and currently the firm’s Ohio Regional Coordinating Partner, and Business Enterprises Practice Area Co-Chair, serves as a key advisor to executive management at NYSE and Fortune 1000 companies. He provides counsel for a wide range of situations and issues, including overall strategy, dispute resolution, employee relations, mergers and acquisitions, political developments and pricing strategies, among others. R...

Mark Mikhaiel’s practice focuses on litigation, encompassing a range of interconnected legal disciplines. He frequently represents clients in complex commercial and professional liability disputes, with a particular emphasis on non-medical professional malpractice; shareholder, fiduciary and business tort litigation; probate litigation; and employment-related disputes. He is driven by complex cases, striving to provide practical and efficient advice to his clients. Mark has handled over...

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...