In the article, "State Tax Cases To Watch In 2015," Law360 analyzed four important cases to follow this year. Included in the article is the Tennessee case, Vodafone Americas Holdings Inc. & Subsidiaries v. Farr. In this case, Vodafone is challenging the right of the Commissioner of Revenue to require the company to use market-based sourcing rather than the cost-of-performance sourcing currently required by Tennessee's franchise and excise tax statutes. The Tennessee Supreme Court is expected to rule on the case this year. Bass, Berry & Sims attorneys Mike Sontag and Steve Jasper are representing Vodafone in the case. To read more about the Vodafone case and the other cases to watch in 2015, click here.