After just four months of planning and work, Sonnenschein Nath & Rosenthal and U.K.-based Denton Wilde Sapte have merged to officially become SNR Denton. The new firm, which went live Thursday, has roughly 1,250 lawyers in 48 offices worldwide and estimated annual revenues of $750 million.

Based on figures from The National Law Journal’s sibling publication The American Lawyer, SNR Denton is now the 25th largest firm in the world when measuring by headcount.