regulation of the freedom of contract.Gregory v. Helvering, Taxpayers have the right to decrease the amount of their taxes or to avoid them altogether by means which the law permits. However, a business reorganization must have economic substance in order to affect tax liability.United States v. South-Eastern Underwriters Association, Businesses whose interstate aspect consists of negotiating and executing contracts with clients, such as insurers, are interstate commerce subject to antitrust law.Escola v. Coca-Cola Bottling Co., 24 Cal.2d 453, 150 P.2d 436 (1944) Important case in the development of the common law of product liability in the United States based on the concurring opinion of California Supreme Court justice Roger Traynor who stated "that a manufacturer incurs an absolute liability when an article that he has placed on the market, knowing that it is to be used without inspection, proves to have a defect that causes injury to human beings."United States v. Paramount Pictures, Inc., Practice of block booking and ownership of theater chains by film studios constituted anti-competitive and monopolistic trade practices.Prima Paint Corp. v. Flood & Conklin Manufacturing Co., Where contracts have arbitration clauses, courts must treat the clause as a separate contract.Southland Corp. v. Keating, Federal Arbitration Act (FAA) governs contracts executed under state law as well as federal law.Mitsubishi Motors Corp. v. Soler Chrysler-Plymouth, Inc., Statutory claims as well as contractual ones are arbitrable under the FAA.Unocal Corp. v. Mesa Petroleum Co., 493 A.2d 946 (Delaware Supreme Court 1985) A board of directors may only try to prevent a take-over where it can be shown that there was a threat to corporate policy and the defensive measure adopted was proportional and reasonable given the nature of the threat.Revlon, Inc. v. MacAndrews & Forbes Holdings, Inc., 506 A.2d 173 (Delaware Supreme Court 1986) in certain limited circumstances indicating that the "sale" or "break-up" of the company is inevitable, the fiduciary obligation of the directors of a target corporation are narrowed significantly, the singular responsibility of the board being to maximize immediate stockholder value by securing the highest price available.United States v. Microsoft Corp., 253 F.3d 34 (D.C. Circuit Court of Appeals, 2001) An attempt by the U.S. government to break up Microsoft as an illegal monopoly.AT&T Mobility LLC v. Concepcion, The FAA pre-empts state laws prohibiting contracts from barring class-action arbitration. Copyright/PatentsWheaton v. Peters, 33 U.S. (8 Pet.) 591 (1834) There is no common law copyright after a