A consumer fraud suit alleging that a deliberately placed “time bomb” caused a law firm’s management software to shut down can’t proceed as a class action, at least for now, a federal judge ruled on Monday.

Kalow & Springut, an 11-lawyer New York intellectual property firm, had used software made by Commence Corp. of Tinton Falls for six years when it stopped working on March 20, 2006, according to the suit, Kalow & Springut v. Commence Corp., 3:07-cv-03442.