Duane Morris, an international law firm with Philadelphia roots, has cut about 18% of its marketing and business development staff, making staff reductions that echo moves at other firms in recent months.

The firm, which has about 650 attorneys, now has a marketing and business development team of 30 to 35 people, after eliminating seven managers and staff and hiring three more senior executives in the past few months, said Ed Schechter, the firm’s chief marketing officer.