A recent case centering on this type of law was settled in 2001, U.S. v. Microsoft.  
The first one established in common law stemmed from a challenged license to produce playing cards in the 1603 British case Darcy v. Allein. In the majority opinion of Appalachian Coals, Inc. v. U.S., Chief Justice Hughes called one a "charter of freedom," and Federal Baseball Club of Baltimore, Inc. v. National Baseball Clubs established the Major Leagues' exception to them. A recent case centering on this type of law was settled in 2001, U.S. v. Microsoft.  FTP, name these laws designed to prevent monopolies.
The first one established in common law stemmed from a challenged license to produce playing cards in the 1603 British case Darcy v. Allein.
antitrust laws or competition law [accept clear equivalents involving monopoly early]