Katharina Trettnak-Hahnl

With broad-based knowledge gained through over 25 years of practice, Darren is a trial lawyer who represents individuals and business clients in complex commercial litigation. As a leader of the firm’s litigation practice, his experience encompasses cases involving partnership and minority shareholder disputes, non-compete agreements and restrictive covenants, breach of fiduciary duty, and claims related to unfair competition and trade secret issues. Darren has additional expertise in c...

Alexis Buese’s practice involves all aspects of commercial litigation, with an emphasis on class action, financial services litigation, contract disputes, and real estate and consumer class action litigation. She has broadly defended the consumer products and financial services industries against the expanding array of class actions that challenge their products, procedures, and servicing. Her clients include financial institutions and numerous consumer goods manufacturers and retailers...

John has been recognized by Best Lawyers of America, Chambers USA, Benchmark and Lawdragon as one of the top attorneys in the country. He has tried many high-profile cases, both civil and criminal, in state and federal courts, and has also argued many appeals in state and federal appellate courts. His clients are broad-based and diverse: governors, senators, representatives, CEOs, boards of directors, entrepreneurs, major chemical companies, railroads, athletes, sport coaches and managers and...

Peter W. Sheehan, Jr. is a lawyer recognized by Best Lawyers in the practice area of Product Liability Litigation - Defendants. Peter W. practices law in Baltimore, Maryland Best Lawyers has recognized Peter W. Sheehan, Jr. since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Peter W. Sheehan, Jr. is held by other lawyers.

Larry Chisenhall has been engaged in the practice of regulatory and public utility law since 1976. His area of concentration has primarily been the representation of electric, natural gas, water, sewer, and telecommunications clients, both regulated and non-regulated, in all aspects of their regulatory and legal needs, including business transactions, financing, rate proceedings, compliance with regulations and rulings, certification proceedings, fuel and transportation contracts, right-of-wa...

Co-Chair of the firm’s Asset-Based Lending Practice, Jason focuses his practice on debt financing and various other corporate finance transactions, with an emphasis on asset-based and cash flow lending. Learn more about their practice.

Kyla A. Williger is a lawyer recognized by Best Lawyers in the practice area of Elder Law. Kyla A. practices law in Canton, Ohio Best Lawyers has recognized Kyla A. Williger since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Kyla A. Williger is held by other lawyers.

David practices in the area of environmental and natural resources law, focusing on environmental compliance auditing, Superfund, solid and hazardous waste, asbestos, water quality, underground storage tank, environmental management systems, environmental remediation and environmental due diligence matters. He has conducted over 120 comprehensive environmental audits throughout the United States and internationally over the past eight years. He was recently named among the 2013 Best Lawyers i...

Robert D. Crivello is a lawyer recognized by Best Lawyers in the practice area of Personal Injury Litigation - Plaintiffs. Robert D. practices law in Brookfield, Wisconsin Best Lawyers has recognized Robert D. Crivello since 2019. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Robert D. Crivello is held by other lawyers.

Known for her diplomacy and practical problem-solving, Jessica Lingertat approaches each transaction with a steady, collaborative hand. Her clients—including large-scale developers entering competitive markets and construction lenders funding varied projects—value her ability to balance risk and reward, structure creative solutions, and help deals cross the finish line with minimal friction. Jessica steers financings and other transactions related to the construction, development ...