Chipmaker Qualcomm's revenue misses estimates

(Reuters) - Qualcomm Inc reported a lower-than-expected 3.9 percent rise in quarterly revenue, at a time when the chipmaker is facing multiple legal challenges over its alleged "anticompetitive" tactics. Qualcomm also forecast current-quarter adjusted profit of $1.15-$1.25 per share and revenue of $5.5 billion-$6.3 billion. Analysts on average were expecting a profit of $1.20 per share and revenue of $5.90 billion, according to Thomson Reuters I/B/E/S. The U.S. Federal Trade Commission and Apple