This is The National Law Journal‘s 31st annual survey of the nation’s 250 largest law firms, covering the period of Oct. 1, 2007, to Sept. 30, 2008. While most of the charts in the NLJ 250 are self-explanatory, here is some information about the process, the criteria and the definitions.

The NLJ sent surveys to approximately 300 law firms and solicited survey submissions to determine the 250 largest.