The U.S. Supreme Court decision in AT&T Mobility LLC v. Concepcion is a win for both parties, according to Alan S. Kaplinsky, Chair of Ballard Spahr's Consumer Financial Services Group. Most consumers never derive any benefit from being part of a class-action lawsuit, he said.

"You're lucky if you get a worthless coupon. People just don’t get anything out of it," Mr. Kaplinsky said. Individual consumers are more likely to benefit more from a settlement, he said.