Ind. Code § 24-1-4-1
From and after March 8, 1901, all arrangements, agreements, trusts, or combinations, or any agreement or arrangements that are made whereby a party or corporation refuses to furnish any article or articles required to be used in the manufacture of any article or merchandise when the party or corporation can furnish the same, or by charging more than the regular and ordinary price for the same or doing or refusing to do any act or acts that would cause such party to cease to manufacture such article or hinder such person or corporation from so doing, and all arrangements, contracts, or acts done or performed between any person or corporation made for the purpose of compelling any person or corporation engaged in the business of manufacturing any article of merchandise to cease manufacturing any such article, or compelling the same to close down or go out of business, are hereby declared to be against public policy, unlawful, and void.
IC 24-1-4-1