<Ul> <Li> Monopolization </Li> <Li> Collusion <Ul> <Li> Formation of cartels </Li> <Li> Price fixing </Li> <Li> Bid rigging </Li> </Ul> </Li> <Li> Product bundling and tying </Li> <Li> Refusal to deal <Ul> <Li> Group boycott </Li> <Li> Essential facilities </Li> </Ul> </Li> <Li> Exclusive dealing </Li> <Li> Dividing territories </Li> <Li> Conscious parallelism </Li> <Li> Predatory pricing </Li> <Li> Misuse of patents and copyrights </Li> </Ul> <Li> Collusion <Ul> <Li> Formation of cartels </Li> <Li> Price fixing </Li> <Li> Bid rigging </Li> </Ul> </Li> <Ul> <Li> Formation of cartels </Li> <Li> Price fixing </Li> <Li> Bid rigging </Li> </Ul> <Li> Formation of cartels </Li>

Price discrimination that substantially lessens competition is prohibited by the clayton act