After an early summer slowdown, the Dewey & LeBoeuf bankruptcy docket is beginning to hum again, with the defunct firm's liquidation trustee filing a slew of suits Friday seeking the return of $5.7 million paid to Bank of America, several law firms and various other vendors in the 90 days before Dewey sought Chapter 11 protection.

The dozen so-called preference actions—which aim to ensure that Dewey didn't give favorable treatment to certain vendors just before going under—represent just the first wave of such litigation, says Minnesota lawyer Joseph Steinfeld, whose firm, ASK LLP, filed the Friday suits on behalf of Dewey liquidation trustee Alan Jacobs.