transitive verb
:to make changes: do something in a new way
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Harold (Hal) L. Lowenstein
Of Counsel
P: 816.472.3104
F: 816.329.5403

Harold “Hal” L. Lowenstein, of counsel in Armstrong Teasdale’s Litigation group, previously served as a judge on the Missouri Court of Appeals, Western District. He was the last appeals judge in Missouri to be appointed by Governor Kit Bond and was one of the longest serving appellate court judges in the state.

Hal’s knowledge of current judicial thinking at the trial and appellate levels on a broad range of issues enhances the Litigation practice group’s ability to argue a client’s case more persuasively. He mentors colleagues on the correct way to provide facts and helps them to formulate the most effective trial strategy.

Much of Hal’s time is spent preparing for trials and appeals. He has been an appointed Special Discovery Master in Jackson Country Circuit Court, streamlining litigation in which discovery battles are particularly contentious. He has also been designated as a guardian ad litem, representing the interests of impaired persons involved in a court proceeding.

A qualified mediator and arbitrator, Hal helps clients reach creative solutions to legal matters. He is a resolute believer in alternative dispute resolution in which parties can control their situation and alleviate the high costs and lengthy delays often associated with trials.

Sharing his commitment to the legal industry, Hal serves as an adjunct professor at the University of Missouri-Kansas City, University of Missouri-Columbia, Washburn and Washington (St. Louis) law schools. He teaches a course in jury selection which culminates in a mock jury trial selection process.


Hal began his legal career as a trial attorney, and later as an Assistant Attorney General in charge of Jack Danforth’s Kansas City office through 1972. Years later he was elected to the Missouri House of Representatives—a position he held for nine years. In 1981, Hal became an appellate judge where he served for the next 28 years. He was a special trial judge on over 25 jury trials while on the appellate court.