The U.S. Supreme Court's ruling in AT&T Mobility LLC vs. Concepcion, stating that companies can require their customers to arbitrate disputes individually rather than joining class actions, is supported by corporations, said Ballard Spahr partner Alan S. Kaplinsky. But Mr. Kaplinsky—who, along with Ballard Spahr colleagues, filed a brief in the case for several industry groups—said that increased use of arbitration contracts by corporations also will be good for consumers.

"There is empirical data showing that consumers do very well in arbitration," he said.