Richard W. Silverthorn

Mike Carlton worked as a trial attorney at the U.S. Department of Justice in Washington, D.C., representing the EPA and other government agencies. Thereafter, he worked as a senior attorney and policy analyst with the Environmental Law Institute, and then as Wisconsin counsel for a national environmental organization. Mike has taught and studied environmental law and policy in Washington, D.C., London, and the University of Wisconsin Law School. Mike heads the firm’s Environmental Law P...

Lawrence J. Burnett is a lawyer recognized by Best Lawyers in the practice areas of Corporate Law and Mergers and Acquisitions Law. Lawrence J. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Lawrence J. Burnett since 2013. 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 Lawrence J. Burnett is held by other lawyers.

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.

Nick G. Kotsonis has been a shareholder with the firm since 1999 and was appointed to the Board of Directors as of January 1, 2014. His practice areas include employment litigation/worker’s compensation, business and commercial litigation, insurance coverage litigation, personal injury, premises liability, environmental/toxic tort claims and risk management.

Linda Sinitz has dedicated her legal career to helping individuals and families navigate complex family law matters in Milwaukee, Wisconsin and throughout the surrounding communities. As the daughter of a lawyer, Linda grew up seeing the value of long-term client relationships and compassionate legal counsel. Early in her career, she practiced alongside her father in a small general practice, where she had the opportunity to represent multiple generations of families. Today, as an attorney wi...

Grant Killoran is a shareholder at O’Neil Cannon and the past Chair of its Litigation Practice Group. He has significant and diverse trial experience representing clients in Wisconsin State and Federal Courts, and courts around the country, focusing on complex business, health care and employment law disputes. Grant also devotes a portion of his practice to arts and entertainment law, with an emphasis on the music industry. Grant is listed in The Best Lawyers in America in the practice ...

David Westrup, a Shareholder in the Litigation and Risk Management Practice Group at von Briesen & Roper, s.c., provides trusted advice and innovative solutions to national and international manufacturers and commercial enterprises, focusing on protecting and advancing client interests in product liability, insurance and risk management, and antitrust. David works extensively with Fortune 500 management and legal departments, providing sophisticated insights to creatively address challeng...

Travis R. Mueller is a lawyer recognized by Best Lawyers in the practice areas of Corporate Law and Mergers and Acquisitions Law. Travis R. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Travis R. Mueller since 2022. 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 Travis R. Mueller is held by other lawyers.

David G. Hanson is a lawyer recognized by Best Lawyers in the practice areas of Advertising Law, Litigation - ERISA, Litigation - Intellectual Property and Litigation - Patent. David G. practices law in Milwaukee, Wisconsin Best Lawyers has recognized David G. Hanson 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 David G. Hanson is held by othe...

Terri Boxer is the Co-Chair of the Trusts and Estates Section. She practices in the areas of marital property, estate planning, and probate and trust administration. She advises clients on business succession planning and tax planning to minimize estate, gift and generation-skipping taxes. She provides services in the drafting of estate plans and other documents including wills, trusts, marital property agreements, premarital agreements and powers of attorney.