Bursor & Fisher hoped to preempt the possibility of the AT&T buyout of T-Mobile going ahead with a arbitration initiative hoping to block the deal. Taking advantage of the Clayton antitrust act's right to challenge a merger if an individual will be hurt by it, the law firm is hoping to bring challenges that would see an arbitrator have to rule on whether or not AT&T was breaching antitrust laws. If the arbitrator rules against AT&T in any one case, it might face a serious challenge to the merger at its own expense.