Jonathan H. Margolies

John E. Mossberg is a lawyer recognized by Best Lawyers in the practice area of Litigation - ERISA. John E. practices law in Milwaukee, Wisconsin Best Lawyers has recognized John E. Mossberg since 2010. 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 John E. Mossberg is held by other lawyers.

Mark Schmidt is a Shareholder in the Litigation and Risk Management Practice Group and Co-Chair of the Construction Law and Litigation Section. Mark helps clients resolve their most challenging and complex problems by focusing on practical solutions and efficient business results. Mark is directly involved in all aspects of negotiation, strategic planning, risk assessment, arbitrations, mediations and court and jury trials in state and federal court. Mark’s broad experience covers all a...

Linda Meagher is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Health Care and Litigation - Insurance. Linda practices law in Milwaukee, Wisconsin Best Lawyers has recognized Linda Meagher since 2026. 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 Linda Meagher is held by other lawyers.

Grant C. Killoran is a shareholder at O’Neil, Cannon, Hollman, DeJong & Laing SC in Milwaukee, Wisconsin, and previously served as Chair of the firm’s Litigation Practice Group . He represents clients in Wisconsin state and federal courts, as well as in courts throughout the United States, in complex business, health care, and employment disputes. His practice also includes arts and entertainment law, with a focus on matters involving the music industry. Grant’s recogniz...

Susan Lovern is the President and CEO of von Briesen &?Roper, s.c. and Chairs the firm’s Commercial and Business Litigation Section. She represents clients in complex business litigation and appeals in state and federal courts, as well as in pre-litigation contexts, including arbitrations and mediations. Susan’s business litigation clients include hospitals, health systems, banks, and manufacturers. She regularly handles contract, lease and warranty disputes for her clients, a...

Gregory A. Storm is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Gregory A. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Gregory A. Storm since 2016. 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 Gregory A. Storm is held by other lawyers.

Kristen Nelson is a Shareholder in the Health Law Section at von Briesen & Roper, s.c. Kristen focuses her practice on professional license defense including health care licensure, Medicare/Medicaid fraud, government investigations and enforcement actions, and professional liability. She represents health care providers, accountants, child care centers, real estate brokers and attorneys. She has represented clients before the Wisconsin Department of Safety and Professional Services, Wisco...

Philip R. O'Brien is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Philip R. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Philip R. O'Brien since 2026. 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 Philip R. O'Brien is held by other lawyers.

John has extensive experience in the areas of personal injury, peer review, and medical malpractice litigation, particularly in representing healthcare organizations and psychiatrists. Since entering private practice in 1978, he has focused on health litigation involving representation of hospitals and nursing homes through a liability insurance plan offered through the Wisconsin Hospital Association. His practice has included a wide range of hospital, nursing home, hospice and physician defe...

Lydia Chartre earned her bachelor’s degree in Business Administration from Carthage College and her Juris Doctor from Marquette University Law School. She practices with Kaman & Cusimano LLC in Milwaukee, Wisconsin, where she focuses on Litigation – Construction, Litigation – Real Estate, and Real Estate Law. Lydia regularly advises condominium and community association boards on a wide range of legal matters, including declaration and bylaw amendments, assessment collec...