Mantas Petkevičius

John practices in all areas of litigation with particular emphasis on criminal, white collar and DUI/OVI (“drunk driving”) defense; and civil litigation involving municipal law, business law, and serious personal injury and wrongful death claims in both State and Federal Court. John was named to the Super Lawyers Top 100 Lawyers in Ohio for 2013. 2017 and 2018 and the Top 50 Lawyers in Cincinnati for 2012 through 2018. He is The Best Lawyers in America 2015 Cincinnati Criminal Def...

David Whitaker is a member of Kean Miller ’s labor and employment law group in New Orleans, Louisiana. His practice focuses on representing employers and management in a wide range of labor and employment matters, including the defense of employment discrimination, harassment, and retaliation claims. He regularly advises employers on compliance with state and federal employment laws, drafts employment contracts, non-compete and confidentiality agreements, and assists with the developmen...

Mark H. Leeds is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Mark H., who practices law in New York, New York, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark H. is held by other top lawyers in the same geographic and legal practice area.

Jimmie Percy is a partner in the Litigation Practice Group and serves on the firm’s board of directors. Jimmie has a broad-based litigation practice that encompasses complex litigation involving business and commercial transactions, environmental and toxic torts, catastrophic injuries, police liability, municipal liability, state and local tax issues, as well as all aspects of insurance coverage disputes. He has extensive experience in oil and gas and pipeline-related litigation, includ...

Ronald I. Heller has been practicing law in Honolulu for over 30 years, in the areas of tax litigation, business/commercial litigation, taxation and business law. He received both JD and MBA degrees from the University of Michigan, and is a licensed Certified Public Accountant as well as an attorney. Mr. Heller is a Fellow of the American College of Tax Counsel, and a past Chair of the Tax Section of the Hawaii State Bar Association. He has litigated tax cases at the county, state, and federa...

Christine Keller advises a wide range of clients on all aspects of health and welfare plan design, administration, and funding including compliance with federal tax, ERISA, and other federal and state law requirements, plan and VEBA trust document drafting, participant disclosure, change in election issues, wellness program compliance, and claims and appeals. Her clients include employers, insurers, and service providers of all sizes. She draws on her prior IRS experience to provide practical...

Elissa B. Haynes is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Defendants. Elissa B., who practices law in Atlanta, Georgia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elissa B. is held by other top lawyers in the same geographic and legal practice area.

Christopher J. Ulery is a top attorney recognized by Best Lawyers in the practice area(s) of Leveraged Buyouts and Private Equity Law. Christopher J., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher J. is held by other top lawyers in the same geographic and legal practice area.

William “Bill” Graham’s practice involves a wide variety of commercial practice areas including commercial litigation, business transactions and business law. His transactional work has included the formation and development of corporations, not for profit entities, LLC’s and partnerships. Over the past 15 years, Bill has represented numerous counties throughout North and Central Florida. He regularly provides defense representation to local governments on a wide array...

Darrell Windham is the managing member of the firm’s Austin office and has forty years of experience representing early stage companies, publicly traded and privately held clients, private equity funds and investors in complex mergers and acquisitions (M&A), strategic joint ventures, capital markets and other domestic and global business transactions. Darrell has experience in a wide variety of industries, including life sciences, medical devices, technology, software and semi-condu...