St Louis-based Bryan Cave is merging with 170-lawyer New York firm Robinson Silverman Pearce Aronsohn & Berman from 1 July to create an 800-lawyer US firm.

The 60-partner Robinson Silverman will give Bryan Cave more than 235 lawyers based in the city. The firm will operate internationally as Bryan Cave, apart from in New York where it will be known as Bryan Cave/Robinson Silverman.