For instance , if a personal injury case happened in a particular county , can any lawyer that can practice in the state of Florida bring a suit into that particular county ? If a case goes to trial within that particular county is that lawyer allowed to be in that court ? I look at a lawyer's resume and they mention things such as admitted to practice in u . s . district court , southern district , or middle district , or all three districts . Some mention appeals court and a specific circuit . I'm not quite familiar with all the courts and how this is significant in choosing an appropriate lawyer for a case .