In the emergent domain of coopetitive business-to-business applications, existing modeling methodological approaches need some accommodations. Enterprises involved in such applications require privacy and autonomy dimension's considerations; it is of a first importance that the known-how of each partner be preserved: their competitiveness depends on it. Based upon the WfMC's work and on our practical experiments in the Building Construction and Embedded Systems Design areas, this paper discusses pragmatic process modeling considerations on this criteria.