Goldman Ismail Tomaselli Brennan & Baum’s founding partners came from two different firms and a corporate law department, but they were hardly strangers. Their common bonds included deep experience defending big pharmaceutical and medical-device companies in products liability cases and a commitment to alternative fee arrangements.

The boutique opened in 2009 with three former partners at Chicago’s Bartlit Beck Herman Palenchar & Scott, two ­former Fulbright & Jaworski partners and managing partner Melissa Widen, who had been an associate at Chicago’s Jenner & Block before working in-house at the fallen accounting firm Arthur Andersen.