David H. Patzer

Nathan K. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Trusts and Estates, Nonprofit / Charities Law, Tax Law and Trusts and Estates. Nathan K., who practices law in Waukesha, Wisconsin, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nathan K. is held by other top lawyers in the same geographic and legal practice area.

Jessica Reginato is a Shareholder and Co-Chair of the Toxic Tort Section at von Briesen & Roper, s.c. Jessica enjoys working with clients to optimize risk management and develop strategies for all phases of litigation. She litigates matters involving product liability and toxic tort, insurance disputes, and commercial and personal injury claims, with an emphasis on defending product manufacturers, suppliers, employers, and premises owners in asbestos lawsuits nationwide. She has extensive...

Jamie Barwin is a Shareholder in the Trusts & Estates Section at von Briesen & Roper, s.c. She focuses her practice on estate planning, probate and estate administration, business and corporate planning, special needs planning and tax. Jamie is also a licensed CPA in both Wisconsin and Michigan with six years of experience at Big 4 Accounting. Jamie delivers comprehensive estate planning services to families and businesses. Jamie helps her clients customize and understand their person...

Doug Dehler is a shareholder with the law firm of O’Neil, Cannon, Hollman, DeJong & Laing S.C., where he leads the firm’s Class Action and False Claims Act practice. Mr. Dehler’s practice focuses primarily on high-stakes, complex litigation, including class action lawsuits and whistleblower (qui tam) cases. Mr. Dehler also represents healthcare providers and business clients in insurance matters, including disputes with health insurance companies and managed care payors....

Martin J. McLaughlin is a top attorney recognized by Best Lawyers in the practice area(s) of Artificial Intelligence Law and Corporate Law. Martin J., who practices law in Milwaukee, Wisconsin, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Martin J. is held by other top lawyers in the same geographic and legal practice area.

John K. Tokarz is a business lawyer whose practice focuses on complex transactions. As a Certified Public Accountant who previously worked as an auditor for a Big Four accounting firm, John understands his clients’ businesses. From startups to publicly traded companies, he provides a full range of transactional and strategic support to clients with matters involving mergers and acquisitions, joint ventures, divestures, securities offerings and other significant corporate transactions. I...

Jeffrey T. “Jeff” Nichols has tried more than 80+ civil jury trials to verdict across state and federal courts in Wisconsin and the United States. A named partner in the firm, Jeff also serves as the president where he is responsible for the execution of the overall business strategy in leading Crivello, Nichols & Hall to becoming Wisconsin and the Midwest’s unrivalled defense law firm. His national trial practice is heavily concentrated on products liability, catastroph...

Brian T. Fahl is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Criminal Defense: White-Collar. Brian T., who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brian T. is held by other top lawyers in the same geographic and legal practice area.

William Keeler is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Litigation - Construction, Mass Tort Litigation / Class Actions - Defendants and Product Liability Litigation - Defendants. William, who practices law in Milwaukee, Wisconsin, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William is held by other top lawyers in the same geographic and legal practice a...

Jon Levine has a national practice focusing on representing employers in all areas of labor-management relations, including litigation before the National Labor Relations Board and in state and federal courts. He also has significant experience with: The National Labor Relations Act Union organizing campaigns Collective bargaining Labor arbitration Title VII The Americans with Disabilities Act The Age Discrimination in Employment Act The Wisconsin Fair Employment Act Jon’s notable succe...