Drinker Biddle & Reath is moving more to a two-tiered partner system, according to a Jan. 11 internal memorandum written by chairman Alfred W. Putnam Jr. and executive partner Andrew C. Kassner, with the firm “utiliz[ing] the category of salary partner with increased frequency.”

The firm first introduced elements of the system in a 2003 document, although at that time it stated Drinker Biddle would “remain predominantly a single-tier equity partnership.”