One of the most critical steps in an inquiry on anti-competitive practices or a merger/acquisition is the definition of the relevant market. For example, did the relevant market for a newspaper merger include radio and TV stations? In the 1950s, Dupont was ruled to be non-dominant in the relevant market which was defined as wrapping material, not clear, waterproof cellophane. Just based on that the government case collapsed. In the case below, the government lawyers wanted to define the relevant market narrowly to stop a merger.