Established in 1939, Davenport Evans Hurwitz & Smith is a general practice firm recognized for its strong litigation presence in South Dakota's courts. Although intellectual property is not a central component of the firm's work, a handful of attorneys are experienced in handling trademark prosecution and, to a certain extent, copyright matters. Chief among those attorneys is David Rezac. Rezac is a member of the firm's Transactions Group and possesses substantial experience obtaining trademark registrations and counseling clients.
Kaufhold & Dix Patent Law is a Sioux Falls-based IP boutique entirely focused on patent and trademark searches and prosecution. The firm comprises two attorneys and is led by Sean Kaufhold, who is one of the few registered patent attorneys in South Dakota.
Woods Fuller Shultz & Smith is a single-office general practice firm located in Sioux Falls and employing a total of 38 attorneys. Intellectual property is not a primary focus for the firm, but nine attorneys do handle varying degrees of patent, trademark and copyright work. The firm is particularly active representing clients with issues related to biofuels and agriculture, medical devices and financial institutions. Troy Leonard, Tim Shattuck and Jeffrey Proehl are recognized as being among the more active attorneys in the state handling intellectual property. Leonard is particularly well-known for his trademark prosecution practice. He is the former chair of the IP Committee for the South Dakota State Bar. Shattuck has litigated multiple patent and trade secret disputes in South Dakota and several nearby states, in addition to an appearance before the Federal Circuit.