There are good laws in place that could fight trolls, but they sit largely unused. First are the consumer-protection laws, which bar “unfair or deceptive acts and practices.” Some patent trolls, to better coerce settlement, purposely misrepresent matters such as the strength of their patents, the extent of other settlements, and their actual willingness to litigate. Second, there are plenty of remedies available under the unfair-competition laws. Some trolls work by aggregating an enormous number of patents, and then present the threat that one of their thousands of patents might actually be valid. The creation of these portfolios for trolling may be “agreements in restraint of trade” under Section 1 of the Sherman Antitrust Act, or they may “substantially lessen competition” under the Clayton Antitrust Act. More generally, the methods of the trolls are hardly what you would call ordinary methods of competition; they should be considered, rather, what the Federal Trade Commission calls “unfair methods of competition” under Section 5 of the F.T.C. Act. The Commission has the power to define and punish methods of business that are inherently harmful with few or no redeeming benefits, and that’s what trolling is. Finally, it is possible that the criminal laws barring larceny and schemes to defraud may cover the conduct of some trolls.