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Loeb & Loeb is pleased to share that Mark Ressler, chair of the firm's Software Litigation practice, and Litigation partners Devin Donohue and Tad O’Connor have been named to Lawdragon’s 2025 “500 Leading Litigators in America” guide. This list spotlights the nation’s most accomplished trial lawyers—exceptional advocates whose strategic insight, courtroom skill and leadership have shaped industries and delivered results in the most high-stakes matters.
Mark brings more than three decades of experience to his nationally recognized litigation practice, representing major companies, financial institutions and public entities in complex, high-stakes disputes. As chair of the firm’s Software Litigation practice, he is a go-to advisor for clients navigating the fallout from failed Enterprise Resource Planning (ERP) software implementations. His work at the intersection of technology and litigation has earned him a reputation for resolving some of the most challenging business conflicts in the industry.
Devin is a seasoned trial lawyer with more than 25 years of experience litigating and arbitrating complex commercial, trade secret and employment disputes. He has represented a wide range of clients—from global financial institutions to high net worth individuals and mission-driven nonprofits—and has served as lead trial counsel in over 500 matters across federal and state courts and major arbitration forums including JAMS, AAA and FINRA. Known for his meticulous preparation, many of his cases resolve early due to his strategic command of the facts and trial readiness.
With more than 30 years of experience, Tad is a veteran trial and appellate lawyer with a particular focus on complex real estate disputes. He represents investors, developers, corporations and others in litigation across the U.S. and in arbitration proceedings in the U.S. and Europe. Trusted by a premier client base—including InterContinental Hotels Group, SL Green, Hilton, Aman Resorts, and others—Tad consistently delivers strategic solutions in high-profile cases involving commercial and hospitality properties.
Lawdragon selects its honorees using a multifaceted process that includes independent research, peer review and nominations. To view the full list of honorees, please visit Lawdragon's website.
Mark brings more than three decades of experience to his nationally recognized litigation practice, representing major companies, financial institutions and public entities in complex, high-stakes disputes. As chair of the firm’s Software Litigation practice, he is a go-to advisor for clients navigating the fallout from failed Enterprise Resource Planning (ERP) software implementations. His work at the intersection of technology and litigation has earned him a reputation for resolving some of the most challenging business conflicts in the industry.
Devin is a seasoned trial lawyer with more than 25 years of experience litigating and arbitrating complex commercial, trade secret and employment disputes. He has represented a wide range of clients—from global financial institutions to high net worth individuals and mission-driven nonprofits—and has served as lead trial counsel in over 500 matters across federal and state courts and major arbitration forums including JAMS, AAA and FINRA. Known for his meticulous preparation, many of his cases resolve early due to his strategic command of the facts and trial readiness.
With more than 30 years of experience, Tad is a veteran trial and appellate lawyer with a particular focus on complex real estate disputes. He represents investors, developers, corporations and others in litigation across the U.S. and in arbitration proceedings in the U.S. and Europe. Trusted by a premier client base—including InterContinental Hotels Group, SL Green, Hilton, Aman Resorts, and others—Tad consistently delivers strategic solutions in high-profile cases involving commercial and hospitality properties.
Lawdragon selects its honorees using a multifaceted process that includes independent research, peer review and nominations. To view the full list of honorees, please visit Lawdragon's website.
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Chair, Software Litigation
