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Sonia Johnson is an associate in the firm’s Kansas City office practicing in the area of civil defense litigation. Prior to joining the firm, Sonia served as an Assistant Prosecutor in Jackson County, Missouri and as an Assistant District Attorney in Baton Rouge, Louisiana, where she tried numerous jury trials. She also served as a Special Assistant U.S. Attorney for the Western District of Missouri.

Sonia graduated from Southern Law School in Baton Rouge, Louisiana in 2006. During law school she served as a law clerk for the Honorable Wilson Fields in the 19th Judicial District Court. She was also a Law Fellow with NAACP Law Fellow Program working at the national headquarters office in Baltimore, Maryland.

Sonia earned her undergraduate degree in English from Jackson State University in Jackson, Mississippi in 2003, where she was also a member of the women’s basketball team.


  • Missouri
  • Texas
  • Louisiana


  • Southern University Law Center, JD, cum laude
  • Jackson State University, BA, W.E.B. Dubois Honors’ College, Dean's List, National Dean's List

Memberships & Activities

  • Missouri Bar Association
  • Kansas City Metropolitan Bar Association


  • ALFA International Compendium, Product Liability & Complex Torts, Missouri Section (with Kara Stubbs) (2017).

News & Events

Baker Sterchi Cowden & Rice Welcomes Sonia Johnson

06.16.17 | Baker Sterchi Cowden & Rice is pleased to welcome Sonia Johnson, who joins the firm’s Kansas City office as an associate. A former Assistant Prosecutor in Jackson County, Missouri and Assistant District Attorney in Baton Rouge, Louisiana, Sonia’s practice with the firm is focused on civil defense litigation.


BSCR Obtains Unanimous Jury Verdict for Retail Gas Station Client

Baker Sterchi Cowden & Rice obtained a defense verdict against the Missouri Department of Natural Resources and the Missouri Office of the Attorney General after a two-week jury trial in Jackson County, Missouri at Kansas City.

Blog Posts

The Balancing Act of OSI Evidence

09.18.17 | Courts are often asked by plaintiffs’ counsel to admit evidence of other similar incidents (OSI) in order to show a defendant’s knowledge of an alleged defect, and/or causation. Plaintiffs have used this approach to tap into the power of strength in numbers and will typically seek to introduce evidence of as many “similar” incidents as a trial court will allow. Although the law allows for the introduction of this type of evidence…