Mark S. Deiermann

Melanie A. Renken is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management and Litigation - Labor and Employment. Melanie A. practices law in St. Louis, Missouri Best Lawyers has recognized Melanie A. Renken since 2027. 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 Melanie A. Renken is held by other lawyers.

Andrew Kasnetz is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Andrew practices law in Clayton, Missouri Best Lawyers has recognized Andrew Kasnetz since 2015. 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 Andrew Kasnetz is held by other lawyers.

Keith A. Herman is a lawyer recognized by Best Lawyers in the practice areas of Closely Held Companies and Family Businesses Law and Trusts and Estates. Keith A. practices law in St. Louis, Missouri Best Lawyers has recognized Keith A. Herman since 2018. 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 Keith A. Herman is held by other lawyers.

Thomas K. Neill practices primarily in civil litigation, including personal injury, medical malpractice, products liability, Federal Employer’s Liability Act, and consumer class actions. He is admitted to practice in Missouri, Arkansas, and Illinois. Mr. Neill’s work for his clients has been recognized on numerous occasions. In 2013, he received the St. Louis County Bar Association’s Roy F. Essen Outstanding Young Lawyer Award, given annually to an attorney under 36 years of...

Yaakov Klein is a lawyer recognized by Best Lawyers in the practice area of Business Organizations (including LLCs and Partnerships). Yaakov practices law in Clayton, Missouri Best Lawyers has recognized Yaakov Klein since 2027. 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 Yaakov Klein is held by other lawyers.

For the past 19 years, Mr. Harrison has devoted his practice exclusively to the representation of companies in the area of labor and employment law. Mr. Harrison’s practice includes counseling and advising clients on employment-related matters such as work related investigations, leave and attendance issues, and disciplinary and termination decisions. He has litigated labor and employment-related matters in federal and state courts throughout the United States, including individual and ...

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...

Jeffrey Atkinson is a lawyer recognized by Best Lawyers in the practice area of Medical Malpractice Law - Defendants. Jeffrey practices law in St. Louis, Missouri Best Lawyers has recognized Jeffrey Atkinson since 2024. 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 Jeffrey Atkinson is held by other lawyers.

Deborah C.M. Henry is a lawyer recognized by Best Lawyers in the practice areas of Family Law and Family Law Mediation. Deborah C.M. practices law in St. Louis, Missouri Best Lawyers has recognized Deborah C.M. Henry 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 Deborah C.M. Henry is held by other lawyers.

Thomas J. O’Toole, Jr. is a founding member of the law firm of Mickes O’Toole, LLC. He chairs the firm’s Business and Corporate Group, while his practice focuses on real estate, specializing in zoning/land use, condemnation and real estate transactions. He received both his undergraduate degree (1979) and law degree (1985) from St. Louis University. Tom is a respected leader in the St. Louis legal and business community. For nearly 30 years, he has built a solid reputation f...