Effective December 1, 2014, Federal Rule of Bankruptcy Procedure 7004(e) was amended to require service of a summons in an adversary proceeding within seven days of its issuance. This cuts in half the previously allowed 14-day time period. Defendants still have 30 days from issuance of the summons to respond to the complaint.
Prior to the change, defendants often had less than two weeks to respond to a complaint that was served by first-class mail. This rule change should give defendants an extra week to respond, depending on the mail.