About Katherine Anne
Katherine Anne Dierdorf earned her law degree from Washington University School of Law after completing an undergraduate degree in history at the University of Michigan, Ann Arbor. She moved from the study of the past to courtroom practice, a shift that shows up in a steady, practical career path rather than dramatic pivots.
She began her legal career as an associate at Armstrong Teasdale, LLP in 2011. Those early years in a larger firm gave her exposure to litigation and transactional work, and to the routines of client management and courtroom preparation that shape an effective litigator.
In 2013 she returned to an academic setting as a pro bono lawyer at Washington University in St. Louis School of Law. That role involved direct client contact and casework offered through the law school clinic, where she handled matters that gave her hands-on experience under faculty supervision.
The next year she took a role as an Assistant Circuit Lawyer at the Circuit Lawyer's Office. That position carried trial-level responsibilities and the day-to-day demands of public service. It reinforced courtroom practice and introduced the workflow of handling cases for a public office.
Later in 2014 she opened Dierdorf Law, LLC. She formed a solo practice that reflects the variety of the prior positions she held. Running a one-lawyer firm required shifting from casework alone to managing the administrative side of practice, from client intake to billing and all the decisions a solo practitioner must make.
Dierdorf is admitted to practice in Missouri and Illinois. Her experience ranges across private firm litigation, pro bono clinic work, and public office responsibilities. Colleagues and clients see a lawyer who takes on both the advocacy and the practical work of running cases.
She continues to operate Dierdorf Law, LLC and represents clients in matters in Missouri and Illinois. Her current practice focuses on providing legal services to individual and institutional clients across those jurisdictions.
