Which of the following was rendered invalid by the federal Consumer Goods Pricing Act of 1975? Marketing Chapter 18 Which of the following was rendered invalid by the federal Consumer Goods Pricing Act of 1975? a. The Robinson-Patman Act (1936) b. State unfair-trade laws c. State fair-trade laws d. The Clayton Act (1914) Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+