Clayton Voss

G. Harley Blosser is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice, Copyright Law, Litigation - Intellectual Property, Litigation - Patent, Patent Law and Trademark Law. G. Harley, who practices law in Clayton, Missouri, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which G. Harley is held by other top lawyers in the same geographic and legal practice ...

Timothy Sansone is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice. Timothy, who practices law in St. Louis, Missouri, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy is held by other top lawyers in the same geographic and legal practice area.

Brian M. Wacker is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Brian M., who practices law in St. Louis, Missouri, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brian M. is held by other top lawyers in the same geographic and legal practice area.

Adam D. Hirtz is a principal and the office litigation manager in the St. Louis, Missouri, office of Jackson Lewis P.C. He prides himself on being a responsive, strategic and creative advocate and counselor for the firm’s clients. Adam has more than 25 years of experience as a trial attorney representing businesses in employment litigation in both state and federal courts throughout the country. He also acts as a mediator, including regularly mediating cases for the Equal Employment Opp...

Michael Quillin is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Michael, who practices law in St. Louis, Missouri, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Donald Paule has extensive experience representing closely-held businesses and not-for-profit organizations. He advises clients on all aspects of the organization and operation of the client’s business including complex sale, financing, mergers and acquisitions, and real estate development transactions. In addition, an extensive portion of his practice is devoted to tax and estate planning matters for individuals, and business owners, including ownership succession planning.

William S. Thomas is one of the firm’s many experienced trial lawyers. His practice is diverse, with an emphasis in complex litigation. He has tried cases in a number of difficult venues, from the City of St. Louis, Missouri, to Madison and St. Clair Counties, in Illinois, and Federal Court in East St. Louis and St. Louis. He was lead trial counsel in one of the longest civil jury trials in St. Louis County history, which lasted 100 trial days. In addition to his trial practice, Bill is...

Jim Layton joined the firm in 2017 after serving more than 22 years in the Missouri Attorney General’s Office—nearly all of those as the State’s principal civil appellate lawyer, Solicitor General. Jim practices in both appellate and trial courts, particularly in matters involving complex legal questions, including those arising under the U.S. and Missouri constitutions, Missouri school funding and other education statutes, discrimination laws, and Missouri tax laws. He repr...

Katherine E. Henry is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Katherine E., who practices law in St. Louis, Missouri, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine E. is held by other top lawyers in the same geographic and legal practice area.

John Fox Arnold has served as general counsel and special counsel to public agencies, represented firms engaged in the underwriting and public offering of securities, and has represented developers and owners during acquisition and construction of governmental, commercial and urban redevelopment projects. In addition, he has structured sales tax rebate, tax abatement and tax increment financing transactions, and served as counsel in tax-incentivized transactions. Mr. Arnold has served as bond...