In this paper we present a pattern-based method for transforming user interfaces of knowledge sharing applications. We highlight a hierarchical pattern language which has been developed in the context of project p.i.t.c.h. (pattern-based interactive tools for improved communication habits in knowledge transfers). On this foundation we use the transformation process of the PaMGIS (Pattern-based Modeling and Generation of Interactive Systems) framework in order to create user interfaces for various contexts of use.