Robinson-Patman Act, passed by the U.S. Congress in 1936 to supplement the Clayton Antitrust Act. The act, advanced by Congressman Wright Patman, forbade any person or firm engaged in interstate commerce to discriminate in price to different purchasers of the same commodity when the effect would be to lessen competition or to create a monopoly. Sometimes called the Anti-Chain-Store Act, this act was directed at protecting the independent retailer from chain-store competition, but it was also strongly supported by wholesalers eager to prevent large chain stores from buying directly from the manufacturers for lower prices.
See studies by D. J. Baum (1964) and R. Posner (1986).
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