CovalX has been established as the leader for characterizing protein interactions by mass spectrometry. Providing Innovative Technologies and Exclusive Services, CovalX has been doing business with world renown Universities, therapeutic companies, and most major pharmaceutical companies worldwide for many years. CovalX AG developed a unique protocol for measuring intact protein complexes using MALDI mass spectrometry. CovalX both sells the tools and/or services for High-Mass MALDI protein-protein interaction analysis. The main applications involve: • epitope mapping (both conformational or linear) • characterizing aggregates from biotherapeutic drugs • analyzing antibody-antigen interactions • rapid characterization of any protein complexes (stoichiometry, inhibition, etc) CovalX also has flexibility and provides services for characterizing any large macromolecules such as PEGylated proteins or polymers. CovalX has recently restructured by moving some of its hardware support facilities and US sales and marketing into the US and establishing an official subsidiary in the Boston area.