Ethan C. Geis

Zachary J. Davis is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance and Product Liability Litigation - Defendants. Zachary J., 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 Zachary J. is held by other top lawyers in the same geographic and legal practice area.

Pamela J. Tillman’s practice focuses on representing a wide variety of businesses in litigation matters, primarily in the areas of complex insurance coverage issues, commercial litigation, mortgage lending disputes, employment disputes and health care liability. Whatever the issue, she believes that it is paramount to have the experience and understanding to advise clients on the possible outcomes and costs of litigation so that clients have a comprehensive viewpoint to make the strateg...

Ashley is a shareholder focusing on civil defense litigation, handling matters at all stages - from pre-suit stage investigations and negotiations, through discovery, settlement, trial, and appeal. She has successfully defended individuals, professionals, corporations, employers, and insurers in matters involving allegations of personal injury, premises liability, product liability, and insurance coverage. Ashley is committed to providing service that produces successful results and her clien...

Dan Welytok is a Shareholder and Chair of the Tax Section at von Briesen & Roper, s.c. Dan’s practice focuses on helping management achieve practical results in all aspects of business. He assists clients nationally and internationally with business development, tax issues, acquisitions and divestments, capital structuring, financing, corporate governance, information technology, licensing and distribution, regulatory and compliance issues, labor and employee benefits matters, and d...

Rob Teuber is a Shareholder focusing his practice on tax disputes and controversies for clients nationally, regionally and locally. From a national perspective, Rob assists in resolving IRS tax audits, Tax Court litigation, personal liability assessments, tax collection matters, Offers in Compromise and foreign financial account disclosures. From a state and local perspective, he works with clients to address sales, employment, income and property tax controversies. Rob takes great pride in a...

Jeff Mark is a Shareholder in the Health and Business Sections at von Briesen & Roper, s.c. Jeff has extensive experience advising hospitals, multi-institutional health care systems, physician groups and specialty providers regarding a variety of transactional health care related matters including affiliations, joint ventures, acquisitions and divestitures; fraud and abuse; Stark; physician agreements; and equipment and office space leasing arrangements. In addition, Jeff represents clien...

James M. Sosnoski is an attorney in Meissner Tierney’s litigation practice group. He represents businesses and insurers in a wide variety of matters, including insurance coverage, environmental litigation business and corporate disputes, and employment disputes and non-competition agreements. James also specializes in handling all aspects of civil appeals. Prior to joining the firm, James served as Term Law Clerk to Justice Rebecca G. Bradley, Supreme Court of Wisconsin, and the Honorab...

Nathan Bayer is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Municipal and Municipal Law. Nathan, 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 Nathan is held by other top lawyers in the same geographic and legal practice area.

Background Mr. Prachthauser was born in Milwaukee, Wisconsin, on January 7, 1951. Prior to joining the firm, he was House Counsel for Employers Insurance of Wausau. He is married to Joan Marie, and they reside in Hartland, Wisconsin. He has two daughters, Emily and Tracy. Lectures Mr. Prachthauser is a frequent presenter and speaker for the State Bar of Wisconsin, American Board of Trial Advocates, and Wisconsin Academy of Trial Lawyers. He has been a Civil Trial Practice Instructor at the Un...

Daniel Manna is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Litigation - Real Estate. Daniel, 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 Daniel is held by other top lawyers in the same geographic and legal practice area.