Did Treehouse Foods Inc. kick off a litigation frenzy by bringing antitrust claims against Keurig Green Mountain Inc., the 800-pound gorilla in the growing market for single-serve coffee?

Following in Treehouse’s footsteps, the plaintiffs firm Grant & Eisenhofer sued Keurig Green Mountain (previously Green Mountain Coffee Roasters Inc.) and its subsidiary Keurig Inc. on Wednesday on behalf of a putative nationwide class of Keurig users. Like Treehouse, Grant & Eisenhofer alleges a “scheme to monopolize the market for the sale of single-serve disposable coffee cartridges for use in Keurig coffee brewers in the United States.”